List of ZIP Codes in Howard County
The following table lists ZIP Codes associated with Howard County, Maryland, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.
| S.N. | Zip Code | Latitude | Longitude | City | Population | Density |
|---|---|---|---|---|---|---|
| 1 | 20701 | 39.12877 | -76.78803 | Annapolis Junction | 749 | 131.4 |
| 2 | 20723 | 39.13664 | -76.86647 | Laurel | 36,319 | 1077.2 |
| 3 | 20759 | 39.15419 | -76.92877 | Fulton | 6,758 | 415.2 |
| 4 | 20763 | 39.13786 | -76.82134 | Savage | 2,320 | 840.0 |
| 5 | 20777 | 39.17487 | -76.96783 | Highland | 3,046 | 155.9 |
| 6 | 20794 | 39.15107 | -76.78882 | Jessup | 16,182 | 647.8 |
| 7 | 21029 | 39.20633 | -76.95206 | Clarksville | 13,783 | 314.6 |
| 8 | 21036 | 39.23416 | -77.00223 | Dayton | 2,162 | 133.5 |
| 9 | 21042 | 39.27105 | -76.8924 | Ellicott City | 43,021 | 448.9 |
| 10 | 21043 | 39.25759 | -76.79773 | Ellicott City | 47,134 | 1064.5 |
| 11 | 21044 | 39.21047 | -76.88353 | Columbia | 44,775 | 1454.4 |
| 12 | 21045 | 39.20622 | -76.82747 | Columbia | 40,866 | 1627.1 |
| 13 | 21046 | 39.17357 | -76.84183 | Columbia | 15,433 | 763.0 |
| 14 | 21075 | 39.20414 | -76.75301 | Elkridge | 37,146 | 1029.5 |
| 15 | 21104 | 39.35044 | -76.90654 | Marriottsville | 5,786 | 131.0 |
| 16 | 21723 | 39.32825 | -77.01056 | Cooksville | 587 | 62.9 |
| 17 | 21737 | 39.2543 | -77.01959 | Glenelg | 2,384 | 179.7 |
| 18 | 21738 | 39.27973 | -77.02554 | Glenwood | 3,668 | 202.9 |
| 19 | 21794 | 39.29705 | -76.97388 | West Friendship | 2,326 | 110.1 |
| 20 | 21797 | 39.33284 | -77.07002 | Woodbine | 8,772 | 77.5 |
About Howard County ZIP Codes
Howard County in Maryland (MD) is served by approximately 20 ZIP Codes. These codes cover residential neighborhoods, business districts, and rural areas that fall under the county's jurisdiction.
Based on ZIP-level population estimates, the total population covered by these ZIP Codes is around 333,217 people. Population and density values vary from one ZIP Code to another, reflecting the mix of dense urban communities and lower-density suburban or rural zones.
Many of the most significant population centers in Howard County are located in cities such as Columbia, Ellicott City, Elkridge, Laurel, Jessup. These cities and towns help define the economic and demographic character of the county.
Most ZIP Codes in Howard County, Maryland follow the America/New_York time zone.
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