25 ZIP Code Tabulation Areas in Howard County, Maryland. The population-weighted median household income is about $151,817, the median home value about $590,898, and 74.5% of occupied homes are owner-occupied.
- 25
- ZIP codes
- 447.5K
- Population
- 53
- Data points
Howard County at a glance
- $151,817
- Median household income
- $590,898
- Median home value
- 39.9
- Median age
- 74.5%
- Owner-occupied
- 164,397
- Housing units
Income, home value, and age are population-weighted averages of the ZIP-level medians in the file. Counts are exact.
Top 5 Howard County ZIP codes by median household income| # | ZIP | City | Population | Homeowner % | Median HH $ |
|---|
| 1 | 20759 | Fulton | 6,624 | 96.1% | $250,001 |
| 2 | 21738 | — | 3,696 | 98.2% | $250,001 |
| 3 | 21737 | — | 2,474 | 93.2% | $250,001 |
| 4 | 21029 | Columbia | 13,607 | 93.6% | $243,542 |
| 5 | 21723 | — | 669 | 95.3% | $241,250 |
Top 5 Howard County ZIP codes by population| # | ZIP | City | Population | Homeowner % | Median HH $ |
|---|
| 1 | 21043 | Catonsville | 48,525 | 66.9% | $148,125 |
| 2 | 21044 | Columbia | 44,114 | 60.3% | $135,057 |
| 3 | 21042 | Ellicott City | 43,327 | 84.7% | $190,061 |
| 4 | 21045 | Columbia | 40,034 | 68.3% | $118,563 |
| 5 | 21784 | Eldersburg | 39,258 | 87.3% | $139,395 |
Top 5 Howard County ZIP codes by Homeowner GDP| # | ZIP | City | Population | Homeowner % | Median HH $ | Homeowner GDP |
|---|
| 1 | 21042 | Ellicott City | 43,327 | 84.7% | $190,061 | $2.4B |
| 2 | 21043 | Catonsville | 48,525 | 66.9% | $148,125 | $1.7B |
| 3 | 21771 | Green Valley | 33,031 | 94% | $157,302 | $1.7B |
| 4 | 21784 | Eldersburg | 39,258 | 87.3% | $139,395 | $1.6B |
| 5 | 21044 | Columbia | 44,114 | 60.3% | $135,057 | $1.5B |
Homeowner GDP = owner-occupied units × median household income — a proxy for aggregate homeowner spending power in a ZIP, useful for scoring market opportunity. Not an official economic statistic.
Densest: 21045 (Columbia) at 4,128 people/sq mi. Least dense: 21723 at 186 people/sq mi.
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