Comparison to Surrounding Areas
The median household income ($-1) for 20621 is less than 20609 ($118,102), 20618 ($105,508), 20624 ($104,545), 20659 ($121,654), and St. Mary's County ($119,446).
| 20621 | $-1 |
| St. Mary's County | $119,446 |
Get Median Household Income for all Zip Codes in Maryland.
The average household income ($97,222) for 20621 is less than 20609 ($304,498), 20618 ($156,136), 20624 ($116,470), 20659 ($150,584), and St. Mary's County ($142,976).
| 20621 | $97,222 |
| St. Mary's County | $142,976 |
Get Average Household Income for all Zip Codes in Maryland.
The per-capita income for 20621 is $54,408. The per capita income ($54,408) for 20621 is less than the per capita income for 20609 ($146,472) and 20618 ($59,691). But it's more than 20624 ($42,416), 20659 ($51,368), and St. Mary's County ($53,417).
| 20621 | $54,408 |
| St. Mary's County | $53,417 |
Get Per-Capita Income for all Zip Codes in Maryland.
16.3% of households make over $200,000 a year. The percent high income households (16.3%) for 20621 is less than 20609 (34.6%), 20618 (26.5%), 20624 (22.3%), 20659 (26.5%), and St. Mary's County (23.5%).
| 20621 | 16.3% |
| St. Mary's County | 23.5% |
Get High Income Households for all Zip Codes in Maryland.
| under 25 years | 25 to 44 years | 45 to 64 years | 65 years and over | |
|---|---|---|---|---|
| 20621 | $-1 | $-1 | $-1 | $-1 |
| St. Mary's County | $58,185 | $131,232 | $144,419 | $83,422 |
Get Median Household Income by Age of Householder for all Zip Codes in Maryland.
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All income statistics above are the most current, comparable income statistics available from the US Census Bureau and are from the American Community Survey 2024 5-year estimates. You can find this information and other demographics for 20621 on the US Census Bureau’s website. These values are in 2024 inflation-adjusted dollars and were downloaded on 29 January 2026.
Margins of error for the income data are:
| Median Household Income | Average Household Income | Per Capita Income | High Income Households | Median Household Income by Age of Householder | ||||
|---|---|---|---|---|---|---|---|---|
| under 25 | 25 to 44 | 45 to 64 | 65+ | |||||
| 20621 | +/-$-1 | +/-$34,917 | +/-$16,469 | +/-14.1% | +/-$-1 | +/-$-1 | +/-$-1 | +/-$-1 |
| St. Mary's County | +/-$4,480 | +/-$4,914 | +/-$1,686 | +/-1.7% | +/-$20,978 | +/-$7,749 | +/-$9,188 | +/-$7,809 |