ZIP code
21738
Glenwood, MD
21738 covers Glenwood in Howard County, with 3,668 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 21738. Methodology
ZIP code map of 21738
About ZIP code 21738
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 21738. Not ACS. Methodology
People in 21738
Race
- White2,735
- Black or African American125
- American Indian or Alaska Native9
- Asian245
- Other race36
- Two or more races223
Hispanic or Latino (any race): 124
Age
- Under 10320
- 10 to 19553
- 20 to 29294
- 30 to 39283
- 40 to 49404
- 50 to 59701
- 60 to 69451
- 70 to 79258
- 80 and older109
Income and housing in 21738
Education
- High school graduate98.0%
- Bachelor's degree75.9%
- Graduate degree42.0%
Places covering 21738
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
No place overlap rows for this ZIP.
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- Howard County100.0%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
100.0% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 21738
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 3,511 | |
| 2006 | 3,270 | |
| 2007 | 3,318 | |
| 2008 | 3,430 | |
| 2009 | 3,506 | |
| 2010 | 3,467 | |
| 2011 | 3,428 | 3,608 |
| 2012 | 3,266 | 3,520 |
| 2013 | 3,415 | 3,450 |
| 2014 | 3,450 | 3,530 |
| 2015 | 3,322 | 3,560 |
| 2016 | 3,461 | 3,520 |
| 2017 | 3,604 | 3,510 |
| 2018 | 3,416 | 3,450 |
| 2019 | 3,827 | 3,450 |
| 2020 | 3,861 | 3,490 |
| 2021 | 4,185 | 3,440 |
| 2022 | 3,786 | 3,540 |
| 2023 | 3,668 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 21738
12 nearest ZIP centroids (any distance)
- 21737Glenelg2.2 miPop 2,384 · Income $250,000+
- 21036Dayton3.3 miPop 2,162 · Income $170,313
- 21794West Friendship3.5 miPop 2,326 · Income $223,833
- 21723Cooksville3.6 miPop 587 · Income $250,000+
- 21797Woodbine4.2 miPop 8,772 · Income $185,435
- 20833Brookeville5.2 miPop 7,868 · Income $203,631
- 21029Clarksville5.8 miPop 13,783 · Income $250,000+
- 20862Brinklow6.9 miPop 393 · Income $242,721
- 21042Ellicott City7.1 miPop 43,021 · Income $190,504
- 21104Marriottsville7.7 miPop 5,786 · Income $199,803
- 20777Highland7.9 miPop 3,046 · Income $218,808
- 20882Gaithersburg8.1 miPop 13,661 · Income $186,964
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 21738, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 21738 FAQ
- What city is ZIP code 21738 in?
- 21738 is in Glenwood, MD.
- What county is 21738 in?
- 21738 is in Howard County.
- What is the median household income in 21738?
- The median household income in 21738 is $230,429.
- Which ZIP codes are near 21738?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 21738.