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About this map

Everyone who lives in the zip code, from the Census Bureau's American Community Survey (5-year average).

Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024).

U.S.
334,922,499
Maryland
6,206,011
Rankings
Full list

Top and bottom zip codes in Maryland

Zip codes with 1,000+ residents

Most populated zip codes

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  1. 120906Silver Spring70,595
  2. 221234Parkville66,334
  3. 320878Gaithersburg66,115
  4. 421740Hagerstown64,792
  5. 521117Owings Mills62,816
  6. 620874Germantown62,738
  7. 721122Pasadena61,566
  8. 821222Dundalk59,407
  9. 920904Silver Spring58,646
  10. 1021061Glen Burnie57,230

Least populated zip codes

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  1. 121767Maugansville1,031
  2. 221856Quantico1,037
  3. 321734Funkstown1,076
  4. 420690Tall Timbers1,077
  5. 521636Goldsboro1,097
  6. 620620Callaway1,115
  7. 720629Dowell1,150
  8. 821640Henderson1,163
  9. 921719Cascade1,178
  10. 1021654Oxford1,179

Population by county in Maryland

  1. 1Montgomery County1,065,949
  2. 2Prince George's County959,754
  3. 3Baltimore County850,796
  4. 4Anne Arundel County598,166
  5. 5Baltimore city573,243
  6. 6Howard County336,328
  7. 7Frederick County287,048
  8. 8Harford County263,757
  9. 9Carroll County175,321
  10. 10Charles County170,527
  11. 11Washington County155,709
  12. 12St. Mary's County115,126
  13. 13Cecil County104,960
  14. 14Wicomico County104,914
  15. 15Calvert County94,313
  16. 16Allegany County67,452
  17. 17Worcester County53,700
  18. 18Queen Anne's County51,825
  19. 19Talbot County37,917
  20. 20Caroline County33,669
  21. 21Dorchester County32,754
  22. 22Garrett County28,615
  23. 23Somerset County24,822
  24. 24Kent County19,346

Questions about this map

Which zip code has the highest population in Maryland?

Among zip codes with at least 1,000 residents, 20906 (Silver Spring, MD) has the highest: 70,595.

Which zip code has the lowest population in Maryland?

21767 (Maugansville, MD) has the lowest: 1,031.

What is the population for the United States?

334,922,499; in Maryland it is 6,206,011.

Where does this data come from?

U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024). Everyone who lives in the zip code, from the Census Bureau's American Community Survey (5-year average).

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