| ZIP Code | 21738 |
| ZIP Code Name | Glenwood |
| Primary County | Howard County |
| ZIP Code Type | Standard |
| Population (2021) | 4,185 |
| Area Code(s) | 410 / 443 / 667 |
| Current Time | EST |
21738 is a United States ZIP Code located in Glenwood Maryland. 21738 is entirely within Howard County. 21738 is within Metro Baltimore.
21738 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 21738 have at least a Bachelor Degree. The majority race/ethnicity residing in 21738 is White. The majority race/ethnicity attending public schools in 21738 is White. The current unemployment level in 21738 is 2.8%.
| Population | 4,185 |
| Population Growth Rate | 16.12% |
| Population Density | 713 People per Square Mile |
| Total Households | 1,024 |
| Percentage High Income Households | 41.0% |
| Median Houshold Income (2021) | $230,250 |
| Average Adjusted Gross Income (2019) | $223,240 |
| Current Unemployment Rate (November 2023) | 2.8% |
| Majority Race/Ethnicty | White - 95.53% |
| Public School Majority Race/Ethnicty | White - 70.05% |
| Race/Ethnicty | Total | Percentage |
|---|---|---|
| White | 3,845 | 95.53% |
| Black | 83 | 2.06% |
| Hispanic | 16 | 0.4% |
| Asian | 81 | 2.01% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
| Race/Ethnicty | Total | Percentage |
|---|---|---|
| White | 779 | 74.12% |
| Black | 60 | 5.71% |
| Hispanic | 69 | 6.57% |
| Asian | 139 | 13.23% |
| Native American | 2 | 0.19% |
| Hawaiian/Pac. Islander | 2 | 0.19% |
| Highest Education Level Attained | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 73 | 3.41% |
| Bachelor Degree | 869 | 40.65% |
| High School Diploma | 389 | 18.19% |
| No High School Diploma | 15 | 0.7% |
| GED or Alternate | 36 | 1.68% |
| 1 or More Years of College | 274 | 12.82% |
| Associates Degree | 130 | 6.08% |
| Masters Degree | 305 | 14.27% |
| Professional Degree | 12 | 0.56% |
| Doctorate Degree | 30 | 1.4% |
| Coordinates | 39.27885056,-77.02616882 |
| Adjacent ZIP Codes | |
| Region | Metro Baltimore |
| Metropolitan/Micropolitan Stat Area | Baltimore-Columbia-Towson, MD |
| Time Zone | Eastern Standard Time |
| IANA Timezone | America/New_York |
| Area | 6 Square Miles |
| US Congressional Districts in 21738 | |
| Maryland State Senate Districts in 21738 | |
| Maryland State House of Delegates Districts in 21738 |
| School Districts in 21738 | |
| Elementary Schools in 21738 | |
| Middle Schools in 21738 | |
| High Schools in 21738 |
| Plant Hardiness Zone | Zone 7a: 0F to 5F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | April 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfa - Humid Continental Hot Summers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 64c - Piedmont Uplands | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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