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About this map

Income inequality on a 0-to-1 scale. 0 means every household earns the same; higher means income is concentrated among fewer households. The U.S. scores about 0.48. Lower is more equal.

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

U.S.
0.483
Maryland
0.456
Rankings
Full list

Top and bottom zip codes in Maryland

Zip codes with 1,000+ residents

Zip codes with the most income inequality

See all
  1. 120742College Park0.682
  2. 221673Trappe0.619
  3. 321912Warwick0.552
  4. 421842Ocean City0.551
  5. 521163Woodstock0.545
  6. 621215Baltimore0.538
  7. 721217Baltimore0.536
  8. 821218Baltimore0.531
  9. 921204Towson0.530
  10. 1021201Baltimore0.530

Zip codes with the least income inequality

See all
  1. 120778West River0.248
  2. 220676Port Republic0.265
  3. 320620Callaway0.268
  4. 421920Elk Mills0.270
  5. 521777Point Of Rocks0.283
  6. 621856Quantico0.283
  7. 721402Annapolis0.296
  8. 820637Hughesville0.300
  9. 921770Monrovia0.304
  10. 1020607Accokeek0.305

Income inequality (Gini) by county in Maryland

  1. 1Baltimore city0.508
  2. 2Talbot County0.506
  3. 3Garrett County0.493
  4. 4Worcester County0.486
  5. 5Dorchester County0.470
  6. 6Montgomery County0.469
  7. 7Baltimore County0.458
  8. 8Kent County0.453
  9. 9Somerset County0.452
  10. 10Wicomico County0.447
  11. 11Washington County0.440
  12. 12Allegany County0.439
  13. 13Queen Anne's County0.427
  14. 14Caroline County0.425
  15. 15Cecil County0.418
  16. 16Anne Arundel County0.418
  17. 17Prince George's County0.416
  18. 18Howard County0.414
  19. 19St. Mary's County0.409
  20. 20Harford County0.408
  21. 21Carroll County0.403
  22. 22Frederick County0.398
  23. 23Charles County0.388
  24. 24Calvert County0.383

Questions about this map

Which zip code has the highest income inequality (gini) in Maryland?

Among zip codes with at least 1,000 residents, 20742 (College Park, MD) has the highest: 0.682.

Which zip code has the lowest income inequality (gini) in Maryland?

20778 (West River, MD) has the lowest: 0.248.

What is the income inequality (gini) for the United States?

0.483; in Maryland it is 0.456.

Where does this data come from?

U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024). Income inequality on a 0-to-1 scale. 0 means every household earns the same; higher means income is concentrated among fewer households. The U.S. scores about 0.48. Lower is more equal.

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