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1. Active Development: Baltimore County, Maryland

Baltimore County Web Map Portal.

2. America Service Area: Harford County, Maryland

Harford County Government. Boundary of area served by the Maryland America Water Company within Harford County.

3. American Community Survey (ACS) 2017 Population Variables Tract: Washington, District of Columbia

2017. Census Bureau. Data source is the Esri Demographics team. This layer contains the most current release of data from the American Community Survey (ACS) about tota...

4. American Community Survey (ACS) 2017 Poverty Status Variables Tract: Washington, District of Columbia

2017. City of Washington, DC. Data source is the Esri Demographics team. This layer contains the most current release of data from the American Community Survey (ACS) about pove...

5. American Community Survey (ACS) 2018 Employment Status Variables Tract: Washington, District of Columbia

2018. Census Bureau. Data downloaded from the Esri Demographics team. This layer shows hours worked, and those unemployed and not in labor force. This is shown by tract...

6. American Community Survey (ACS) 2018 Housing Costs Variables Tract: Washington, District of Columbia

2018. Census Bureau. Data source is the Esri Demographics team. This layer shows housing costs as a percentage of household income. This is shown by tract boundaries re...

7. American Community Survey (ACS) 2018 Median Household Income Variables Tract: Washington, District of Columbia

2018. Census Bureau. Data source is the Esri Demographics team. This layer shows median household income by race and by age of householder. This is shown by tract bound...

8. American Community Survey (ACS) 2018 Population Variables Tract: Washington, District of Columbia

2018. Census Bureau. Data source is the Esri Demographics team. This layer contains the most current release of data from the American Community Survey (ACS) about tota...

9. American Community Survey (ACS) 2018 Poverty Status Variables Tract: Washington, District of Columbia

2018. Census Bureau. Data source is the Esri Demographics team. This layer contains the most current release of data from the American Community Survey (ACS) about pove...

10. Animal Control Sectors: Howard County, Maryland

Animal Control Sector polygons depicting the areas of Howard County where Animal Control Officers are dispatched.

11. Archived Election Boundaries - 2002 Legislative Districts: Maryland

2002. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.2002 districts have since been modifed in 2012. MDP is Maryland...

12. Archived Election Boundaries - 2002 Us Congressional Districts: Maryland

2002. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.2002 districts have since been modifed in 2011. MDP is Maryland...

13. Baltimore City Neighborhoods: Maryland

2010. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov.A representation of the boundaries of Baltimore City neighborho...

14. Baltimore County Historic Districts: Baltimore County, Maryland

2017. Baltimore County Government. Outlines the boundaries of the Baltimore County Historic Districts. The agreement by the owners of 75 percent of the property within a proposed dis...

15. BFE: City of Baltimore, Maryland

Baltimore City. Preliminary FEMA map layer - February 2019 Please contact victor.ukpolo@baltimorecity.gov with questions.

16. Board Of Education Districts: Montgomery County, Maryland

2019. Montgomery County, MD. Board of Education Districts in Montgomery County.

17. Boundary: Maryland

ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov.This data layer contains the 1972 Wetland Maps. These are guida...

18. CBCA Outer Boundary: Baltimore County, Maryland

Baltimore County Web Map Portal. This data is valid and authoritative for the time period beginning on the date it is approved by the Critical Area Commission, and ending on the da...

19. Census Blocks: Baltimore County, Maryland, 2010

2010. Baltimore County Web Map Portal. Census blocks, the smallest geographic area for which the Bureau of the Census collects and tabulates decennial census data, are formed by streets,...

20. Census Boundaries - Census Block Groups 2010: Maryland

2010. ArcGIS Online for Maryland. This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov.Block Groups (BGs) are defined before tabulation block de...

21. Census Boundaries - Census Blocks 2010: Maryland

2010. ArcGIS Online for Maryland. This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov.Census Blocks are statistical areas bounded on all sides ...

22. Census Boundaries - Census Tracts 2010: Maryland

2010. ArcGIS Online for Maryland. This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov.The primary purpose of census tracts is to provide a stab...

23. Census Data - Zip Code Tabulation Areas (Zctas): Maryland

2016. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.The units of geography used for the 2010 Census maps displayed ...

24. Census Designated Areas - Census Designated Places 2010: Maryland

2010. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.The TIGER/Line Files include both incorporated places (legal en...

25. Census Designated Areas - Urban Areas 2010: Maryland

2010. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.After each decennial census, the Census Bureau delineates urban...

26. Census Tracts: Baltimore County, Maryland, 2010

2010. Baltimore County Web Map Portal. Census tracts are small, relatively permanent geographic subdivisions of a county or equivalent entity. The primary purpose of census tracts is to ...

27. Census Tracts: Howard County, Maryland, 2010

2010. Block tract boundaries as defined by the US census.

28. Columbia Town Center Boundary: Howard County, Maryland

Columbia Town Center boundary.

29. Columbia Town Center Neighborhoods: Howard County, Maryland

Columbia Town Center neighborhood boundaries.

30. Columbia Village & Neighborhood Boundaries: Howard County, Maryland, 2016

2016. Provided by the Columbia Association. Contains Villages and Neighborhoods designations.

31. Commissioner Districts: Carroll County, Maryland

2014. Carroll County, Maryland. Carroll County Commissioner Districts.

32. Communities: Montgomery County, Maryland

2015. Montgomery County, MD. In 2009, the five Regional Services Center directors worked with DTS-GIS staff to create geographic areas with which citizens identify, since some ...

33. Congressional Districts: Harford County, Maryland

Harford County Government. Congressional District boundaries for Harford County Maryland.

34. Congressional Districts: Howard County, Maryland

Defined by the State of Maryland.

35. Congressional Districts: Montgomery County, Maryland

2015. Montgomery County, MD. Congressional Districts.

36. Conservation Focus Areas, Long Range Plan 2045: Delaware Valley

2017. DVRPC-GIS. CONSERVATION FOCUS AREASConnections 2045 Plan for Greater Philadelphia - Administrative Version DVRPC Publication No. 17039 12/2017For planning pur...

37. Corporate Boundary: Carroll County, Maryland

2016. Carroll County, Maryland. Boundary for Carroll County Maryland.

38. Corporate Limits: Carroll County, Maryland

2016. Carroll County, Maryland. Corporate Limits for Carroll County Maryland.

39. Council District: Baltimore, Maryland, 2021

2021. Baltimore City. This dataset represents Baltimore City council district areas.

40. Council District: City of Baltimore, Maryland

2011. Baltimore City. This layer defines the boundaries for the Baltimore City Council Districts. The current districts were enacted in 2011.

41. Council Districts: Montgomery County, Maryland, 2011

2011. Montgomery County, MD.

42. Councilmanic Districts: Baltimore County, Maryland

Baltimore County Web Map Portal. Councilmanic Districts for Baltimore County, Maryland.

43. Councilmanic Districts: Harford County, Maryland

Harford County Government. Councilmanic District boundaries for Harford County Maryland.

44. Councilmanic Districts: Montgomery County, Maryland

2015. Montgomery County, MD. Councilmanic Districts.

45. County Boundaries (line): Delaware Valley

2020. DVRPC-GIS. Linear county boundaries for Pennsylvania, New Jersey, Delaware, Maryland, New York, Connecticut, and the District of Columbia. Original Sources: P...

46. County Boundaries: Maryland

County boundaries as defined by the State of Maryland. The Howard County portion has been incorporated into this layer.

47. County Boundaries (polygon): Delaware Valley

2020. DVRPC-GIS. Linear county boundaries for Pennsylvania, New Jersey, Delaware, Maryland, New York, Connecticut, and the District of Columbia. Original Sources: P...

48. County Boundary: Calvert County, Maryland

2016. Calvert County GIS. This data depicts the political boundaries of Calvert County, Maryland.

49. County Boundary: Harford County, Maryland

Harford County Government. Harford County Maryland Boundary.

50. County Boundary: Howard County, Maryland

Howard County Maryland boundary polygon based on legal documents and descriptions.

51. County Council Districts, Historic: Howard County, Maryland, 1990

1990. Historic Howard County Council Districts based on the 1990 Census Data and Howard County Redistricting. This data was replaced by the 2000 Council ...

52. County Council Districts, Historic: Howard County, Maryland, 2000

2000. Historic Council Districts based on the 2000 Census Data and Howard County Redistricting. This data was replace by current Council Districts in Dec...

53. County Council Districts: Howard County, Maryland, 2014

2014. As defined by the Howard County redistricting committee using 2010 Census data. This boundary file became active December, 2014.

54. DC Health Planning Neighborhoods: Washington, District of Columbia

2020. City of Washington, DC. This dataset contains polygons that represent the boundaries of statistical neighborhoods as defined by the DC Department of Health (DC Health). DC...

55. Dockless Equity Emphasis Areas: Washington, District of Columbia

2020. City of Washington, DC. Equity Emphasis Areas for the 2020 dockless bike and scooter permits. This map adapted the COG methodology for use in the District by weighting it ...

56. Early Vote Centers: Washington, District of Columbia

2020. City of Washington, DC. TheDC Board of Elections is operating Early Vote Centers beginning October 27, 2020 through November 2, 2020 from 8:30 AM to 7:00 PM. Early Vote Ce...

57. Election Boundaries - Legislative Districts 2012: Maryland

2012. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.Polygon layer contains the 2012 Maryland State Legislative Dist...

58. Election Boundaries - Us Congressional Districts 2011: Maryland

2011. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.Polygon layer contains the 2011 United States Congressional Dis...

59. Election Day Vote Centers: Washington, District of Columbia

2020. City of Washington, DC. TheDC Board of Elections is operating Election Day Vote Centers on November 3, 2020 from 7:00 AM to 8:00 PM. These are placed in all 8 Wards. Voter...

60. Election Districts: Baltimore County, Maryland

Baltimore County Web Map Portal. Election districts for Baltimore County, Maryland.

61. Election Districts: Calvert County, Maryland

2016. Calvert County GIS. This data depicts the boundaries of the three election districts in Calvert County, Maryland.

62. Election Districts: Carroll County, Maryland

2016. Carroll County, Maryland. Election Districts for Carroll County Maryland.

63. Election Districts: Montgomery County, Maryland

2015. Montgomery County, MD. Election Districts.

64. Election Precincts: Harford County, Maryland

Harford County Government. Election Precinct boundaries for Harford County Maryland.

65. Election Precincts: Montgomery County, Maryland

2015. Montgomery County, MD. Election Precincts.

66. Elementary School Districts: Baltimore County, Maryland

Baltimore County Web Map Portal. Districts boundaries for elementary schools in Baltimore County.

67. Enterprise Zone: Baltimore, Maryland

2015. Baltimore City. Enterprise Zones.

68. Enterprise Zone: Baltimore, Maryland

2015. Baltimore City. Enterprise Zones.

69. Enterprise Zones: Baltimore County, Maryland

Baltimore County Web Map Portal. Stores polygon areas that represent specially zoned areas where businesses receive incentives in return for investments and job creation in the zone.

70. Ez Focusareas: Baltimore, Maryland

2015. Baltimore City. Enterprise Zones Focus Areas.

71. Fire Station Zones: Montgomery County, Maryland

2015. Montgomery County, MD. FIRE STATION RESPONSE AREAS.

72. Food Scrap Recycle Area: Howard County, Maryland

Areas where food scrap recycling is available within Howard County.

73. Forest Conservation Areas: Carroll County, Maryland

2016. Carroll County, Maryland. Forest Conservation Easements for Carroll County Maryland.

74. Growth Areas: Carroll County, Maryland

2017. Carroll County, Maryland. Growth Areas for Carroll County Maryland.

75. High School Districts: Baltimore County, Maryland

Baltimore County Web Map Portal. High School boundaries for Baltimore County. Provided to OIT by the Baltimore County Board of Education.

76. Historic Districts: Harford County, Maryland

Harford County Government. A significant concentration, linkage, or continuity of sites, buildings, structures, or objects united historically or aesthetically by plan or phy...

77. Historic Districts: Howard County, Maryland

Historic Districts as defined by the Department of Planning and Zoning.

78. Legislative Districts: Baltimore County, Maryland

Baltimore County Web Map Portal. Legislative districts for Baltimore County, Maryland.

79. Legislative Districts: Baltimore, Maryland

2015. Baltimore City. Baltimore City Legislative District Boundaries Polygon.

80. Legislative Districts: Harford County, Maryland

Harford County Government. Legislative District boundaries for Harford County Maryland.

81. Legislative Districts: Howard County, Maryland

Legislative District boundaries as defined by the State of Maryland.

82. Legislative Districts: Montgomery County, Maryland

2015. Montgomery County, MD. Legislative Districts.

83. Maryland Archived American Community Survey Census Tracts 2008 To 2012: Maryland, United States

2008-2012. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information on http://imap.maryland.gov.The American Community Survey (ACS) is a nationwide, continuous...

84. Maryland Campus Facilities - Tu Campus Boundary: Towson, Maryland

2017. ArcGIS Online for Maryland. This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov.This layer illustrates the Towson University campus bound...

85. Maryland Critical Areas - Critical Areas: Maryland

2021. DNR. In 1984, the General Assembly enacted the Chesapeake Bay Critical Area Act to regulate development, manage land use and conserve natural resources ...

86. Maryland Incentive Zones - Arts and Entertainment Districts - Point: Maryland

2017. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.The Maryland State Arts Council sponsors Arts Entertainment Dis...

87. Maryland Incentive Zones - Metropolitan Planning Organizations Boundaries: Maryland

2017. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.Polygon features that represent the political boundaries of Met...

88. Maryland Mdot Sha District Boundaries - Mdot Sha District Boundaries: Maryland

2017. ArcGIS Online for Maryland. This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov.MDOT SHA District Boundaries data consists of polygon fea...

89. Maryland Physical Boundaries - County Boundaries (Detailed): State of Maryland

ArcGIS Online for Maryland. This layer contains detailed outlines of Maryland counties. The Maryland land county boundaries were built using political county boundaries and th...

90. Maryland Shellfish - Oyster Sanctuaries

ArcGIS Online for Maryland. Polygon delineation of Maryland oyster sanctuaries. The document Oyster_Sanctuaries_of_the_Chespeake_Bay_and_Tidal_Tributaries_September 2010 is th...

91. Maryland US National Grid Zone 18S - US National Grid Zone 18S (6x8 Zones)

ArcGIS Online for Maryland. This layer is the UTM 6x8 zone that covers Zone 18S which covers part of Maryland.The U.S. National Grid provides a standardized grid reference sys...

92. Metropolitan District: Baltimore County, Maryland

Baltimore County Web Map Portal. The MetroDistrict feature class contains the current land area included in the metropolitan district in Baltimore County. The metropolitan district...

93. Montgomery County Boundary: Montgomery County, Maryland

2020. Montgomery County, MD.

94. Municipal Boundaries: Harford County, Maryland

Harford County Government. Municipal boundaries within Harford County, Maryland; Bel Air, Aberdeen, and Havre de Grace.

95. Municipal Boundaries (line): Delaware Valley

2020. DVRPC-GIS. Municipal boundaries for Pennsylvania, New Jersey, Maryland, Delaware, and the District of Columbia with ortho-rectified municipal boundaries for t...

96. Municipal Boundaries (polygon): Delaware Valley

2020. DVRPC-GIS. Municipal boundaries for Pennsylvania, New Jersey, Maryland, Delaware, and the District of Columbia with ortho-rectified municipal boundaries for t...

97. Obstructed Areas: Washington, District of Columbia, 2017

2017. D.C. Office of the Chief Technology Officer. Obscured Areas. The dataset contains polygons representing planimetric obscured areas, created as part of the DC Geographic Information System (DC ...

98. Parking Zones: Washington, District of Columbia

2020. City of Washington, DC. Parking Zones are created between two parking restriction signs of the same type that point at each other, or between a sign and an intersection.

99. Physical Boundaries - County Boundaries (Generalized): Maryland

2016. ArcGIS Online for Maryland. This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov.Polygon layer contains generalized outlines of Maryland countie...

100. Pipeline Data: Delaware Valley

2020. DVRPC-GIS. The pipelines shapefile was digitized from Ai graphic files, where individual lines were traced from PDFs of individual county maps provided by the...