Comparison to Surrounding Areas
The median household income ($157,302) for 21771 is less than the median household income for 20882 ($184,136), 21770 ($183,571), 21774 ($171,103), 21797 ($189,241), and Green Valley CDP ($171,707). But it's more than 21791 ($93,015), 20872 ($141,050), 21157 ($104,966), 21701 ($106,577), 21776 ($133,409), Carroll County ($118,211), Frederick County ($122,002), Howard County ($149,763), Montgomery County ($132,450), and Mount Airy town ($151,324).
| 21771 | $157,302 |
| Green Valley CDP | $171,707 |
| Mount Airy town | $151,324 |
| Carroll County | $118,211 |
| Frederick County | $122,002 |
| Howard County | $149,763 |
| Montgomery County | $132,450 |
Get Median Household Income for all Zip Codes in Maryland.
The average household income ($174,549) for 21771 is less than the average household income for 20882 ($218,132), 21770 ($194,627), 21774 ($180,456), 21797 ($209,234), Montgomery County ($181,376), Howard County ($184,243), and Green Valley CDP ($190,415). But it's more than 21791 ($109,742), 21157 ($128,446), 21701 ($137,084), 21776 ($144,384), 20872 ($159,706), Frederick County ($148,300), Carroll County ($142,587), and Mount Airy town ($168,087).
| 21771 | $174,549 |
| Green Valley CDP | $190,415 |
| Mount Airy town | $168,087 |
| Carroll County | $142,587 |
| Frederick County | $148,300 |
| Howard County | $184,243 |
| Montgomery County | $181,376 |
Get Average Household Income for all Zip Codes in Maryland.
The per-capita income for 21771 is $60,220. The per capita income ($60,220) for 21771 is less than the per capita income for 20882 ($76,380), 21797 ($70,998), Howard County ($67,501), and Montgomery County ($67,571). But it's more than 21791 ($41,286), 21701 ($60,194), 21770 ($58,954), 21774 ($59,972), 21776 ($54,829), 20872 ($55,057), 21157 ($49,793), Frederick County ($54,982), Carroll County ($53,124), Green Valley CDP ($59,911), and Mount Airy town ($57,455).
| 21771 | $60,220 |
| Green Valley CDP | $59,911 |
| Mount Airy town | $57,455 |
| Carroll County | $53,124 |
| Frederick County | $54,982 |
| Howard County | $67,501 |
| Montgomery County | $67,571 |
Get Per-Capita Income for all Zip Codes in Maryland.
34.2% of households make over $200,000 a year. The percent high income households (34.2%) for 21771 is less than the percent high income households for 20882 (43.7%), 21770 (44.2%), 21774 (38.0%), 21797 (43.5%), Howard County (34.7%), Green Valley CDP (41.1%), and Mount Airy town (34.6%). But it's more than 21791 (9.2%), 21157 (18.9%), 21701 (20.5%), 21776 (23.9%), 20872 (29.3%), Frederick County (24.6%), Montgomery County (31.1%), and Carroll County (23.1%).
| 21771 | 34.2% |
| Green Valley CDP | 41.1% |
| Mount Airy town | 34.6% |
| Carroll County | 23.1% |
| Frederick County | 24.6% |
| Howard County | 34.7% |
| Montgomery County | 31.1% |
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 | |
|---|---|---|---|---|
| 21771 | $51,150 | $171,102 | $183,875 | $91,053 |
| Green Valley CDP | $-1 | $172,208 | $212,500 | $119,250 |
| Mount Airy town | $-1 | $160,077 | $195,125 | $79,400 |
| Carroll County | $58,773 | $140,910 | $148,624 | $71,452 |
| Frederick County | $67,867 | $129,626 | $151,637 | $85,114 |
| Howard County | $67,536 | $148,154 | $181,793 | $110,656 |
| Montgomery County | $57,976 | $127,095 | $162,171 | $109,242 |
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 21771 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+ | |||||
| 21771 | +/-$7,190 | +/-$7,699 | +/-$2,838 | +/-3.4% | +/-$315 | +/-$4,338 | +/-$19,354 | +/-$17,826 |
| Green Valley CDP | +/-$16,148 | +/-$13,372 | +/-$4,915 | +/-6.2% | +/-$-1 | +/-$20,409 | +/-$13,996 | +/-$45,496 |
| Mount Airy town | +/-$12,406 | +/-$10,153 | +/-$3,150 | +/-4.9% | +/-$-1 | +/-$10,508 | +/-$27,958 | +/-$18,189 |
| Carroll County | +/-$3,883 | +/-$2,749 | +/-$950 | +/-1.1% | +/-$5,929 | +/-$7,273 | +/-$5,233 | +/-$3,938 |
| Frederick County | +/-$2,489 | +/-$2,160 | +/-$744 | +/-0.9% | +/-$8,769 | +/-$3,514 | +/-$4,897 | +/-$3,939 |
| Howard County | +/-$3,158 | +/-$3,425 | +/-$1,195 | +/-1.0% | +/-$15,955 | +/-$5,806 | +/-$6,431 | +/-$6,899 |
| Montgomery County | +/-$2,073 | +/-$2,169 | +/-$721 | +/-0.5% | +/-$9,493 | +/-$4,080 | +/-$3,338 | +/-$3,159 |