Comparison to Surrounding Areas
The median household income ($190,061) for 21042 is less than the median household income for 21029 ($243,542), 21036 ($218,036), 21104 ($191,804), 21737 ($250,001), and 21794 ($231,466). But it's more than 21044 ($135,057), 21163 ($134,672), 21244 ($85,114), 21043 ($148,125), 21045 ($118,563), Howard County ($149,763), and Ellicott City CDP ($156,964).
| 21042 | $190,061 |
| Ellicott City CDP | $156,964 |
| Howard County | $149,763 |
Get Median Household Income for all Zip Codes in Maryland.
The average household income ($221,122) for 21042 is less than the average household income for 21029 ($293,475), 21036 ($254,369), 21163 ($227,793), 21737 ($342,577), and 21794 ($288,564). But it's more than 21044 ($162,075), 21104 ($209,422), 21244 ($98,043), 21043 ($177,430), 21045 ($142,128), Howard County ($184,243), and Ellicott City CDP ($187,257).
| 21042 | $221,122 |
| Ellicott City CDP | $187,257 |
| Howard County | $184,243 |
Get Average Household Income for all Zip Codes in Maryland.
The per-capita income for 21042 is $77,643. The per capita income ($77,643) for 21042 is less than the per capita income for 21029 ($89,689), 21036 ($88,079), 21163 ($81,758), 21737 ($101,402), and 21794 ($88,649). But it's more than 21044 ($68,805), 21104 ($74,405), 21244 ($37,916), 21043 ($65,206), 21045 ($56,185), Howard County ($67,501), and Ellicott City CDP ($67,822).
| 21042 | $77,643 |
| Ellicott City CDP | $67,822 |
| Howard County | $67,501 |
Get Per-Capita Income for all Zip Codes in Maryland.
46.8% of households make over $200,000 a year. The percent high income households (46.8%) for 21042 is less than the percent high income households for 21029 (64.7%), 21036 (56.6%), 21104 (46.9%), 21737 (63.7%), and 21794 (61.1%). But it's more than 21044 (27.7%), 21163 (30.7%), 21244 (7.5%), 21043 (33.3%), 21045 (23.8%), Howard County (34.7%), and Ellicott City CDP (36.3%).
| 21042 | 46.8% |
| Ellicott City CDP | 36.3% |
| Howard County | 34.7% |
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 | |
|---|---|---|---|---|
| 21042 | $2,499 | $196,129 | $233,991 | $125,296 |
| Ellicott City CDP | $46,081 | $166,357 | $196,785 | $104,474 |
| Howard County | $67,536 | $148,154 | $181,793 | $110,656 |
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 21042 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+ | |||||
| 21042 | +/-$12,121 | +/-$10,574 | +/-$3,556 | +/-3.1% | +/-$-1 | +/-$8,973 | +/-$16,915 | +/-$14,349 |
| Ellicott City CDP | +/-$11,037 | +/-$7,823 | +/-$2,722 | +/-2.5% | +/-$11,713 | +/-$21,624 | +/-$10,397 | +/-$17,738 |
| Howard County | +/-$3,158 | +/-$3,425 | +/-$1,195 | +/-1.0% | +/-$15,955 | +/-$5,806 | +/-$6,431 | +/-$6,899 |