| ZIP Code | 21042 |
| ZIP Code Name | Ellicott City |
| Primary County | Howard County |
| ZIP Code Type | Standard |
| Population (2021) | 42,952 |
| Area Code(s) | 410 / 443 / 667 |
| Current Time | EDT |
21042 is a United States ZIP Code located in Ellicott City Maryland. Portions of 21042 are also in Columbia. 21042 is entirely within Howard County. 21042 is within Metro Baltimore.
21042 can be classified socioeconically as a Upper Middle Class class zipcode in comparison to other zipcodes in Maryland based on Median Household Income and Average Adjusted Gross Income. Measuring level of educational attainment the majority of adults in 21042 have at least a Bachelor Degree. The majority race/ethnicity residing in 21042 is White. The majority race/ethnicity attending public schools in 21042 is Asian. The current unemployment level in 21042 is 2.8%.
| Population | 42,952 |
| Population Growth Rate | 6.35% |
| Population Density | 1,152 People per Square Mile |
| Total Households | 13,368 |
| Percentage High Income Households | 26.5% |
| Median Houshold Income (2021) | $159,032 |
| Average Adjusted Gross Income (2019) | $160,260 |
| Current Unemployment Rate (June 2023) | 2.8% |
| Majority Race/Ethnicty | White - 60.52% |
| Public School Majority Race/Ethnicty | Asian - 39.35% |
| Race/Ethnicty | Total | Percentage |
|---|---|---|
| White | 25,252 | 60.37% |
| Black | 2,202 | 5.26% |
| Hispanic | 1,500 | 3.59% |
| Asian | 12,705 | 30.38% |
| Native American | 64 | 0.15% |
| Hawaiian/Pac. Islander | 103 | 0.25% |
| Race/Ethnicty | Total | Percentage |
|---|---|---|
| White | 3,653 | 40.29% |
| Black | 1,006 | 11.1% |
| Hispanic | 602 | 6.64% |
| Asian | 3,761 | 41.48% |
| Native American | 30 | 0.33% |
| Hawaiian/Pac. Islander | 14 | 0.15% |
| Highest Education Level Attained | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 904 | 3.42% |
| Bachelor Degree | 9,102 | 34.45% |
| High School Diploma | 2,879 | 10.9% |
| No High School Diploma | 174 | 0.66% |
| GED or Alternate | 188 | 0.71% |
| 1 or More Years of College | 2,497 | 9.45% |
| Associates Degree | 1,380 | 5.22% |
| Masters Degree | 6,016 | 22.77% |
| Professional Degree | 1,767 | 6.69% |
| Doctorate Degree | 1,504 | 5.69% |
| Coordinates | 39.27056122,-76.89243317 |
| Adjacent ZIP Codes | |
| Cities/Towns in 21042 | |
| Region | Metro Baltimore |
| Metropolitan/Micropolitan Stat Area | Baltimore-Columbia-Towson, MD |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |
| Area | 37 Square Miles |
| US Congressional Districts in 21042 | |
| Maryland State Senate Districts in 21042 | |
| Maryland State House of Delegates Districts in 21042 |
| School Districts in 21042 | |
| Elementary Schools in 21042 | |
| Middle Schools in 21042 | |
| High Schools in 21042 |
| Plant Hardiness Zone | Zone 6b: -5F to 0F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | April 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Cfa - Humid Subtropical Climate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 64c - Piedmont Uplands | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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