ZIP Code 21738, Maryland
ZIP Code 21738 profile, demographic data, and geographic information.
ZCTA5 21738 is a 5-digit ZIP Code area located in Howard County, Maryland. As of official census estimates, it has a reported population of 3,696. The land area covers 6.98 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 3,696 | ±566 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 41.2 yrs | ±5.8 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 1,121 | ±161 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 1,121 | ±161 |
| Occupied Housing Units | 1,121 | ±161 |
| Vacant Housing Units | 0 | ±14 |
| Median Home Value | $914,300 | ±$83,991 |
| Median Gross Rent | Suppressed | — |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $250,000+ | — |
| Per Capita Income | $92,235 | ±$10,778 |
| Poverty Rate | 2.4% | ±2.1% |
| Population Below Poverty Level | 87 | ±77 |
| Unemployment Rate | 1.9% | ±1.9% |
| Civilian Labor Force, Employed | 1,816 | ±310 |
| Broadband Internet Rate | 95.5% | ±18.5% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 339,668 (2024)
ID: 166366
|
County | Official County Government |
Contact: EXECUTIVE ASSISTANT II
3430 COURT HOUSE DR, ELLICOTT CITY MD 21043-4350
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | 06-08 | Silver Spring, MD | |
| Alternative School Nearby | 06-12 | Rockville, MD | |
| Alternative School Nearby | 09-12 | Ellicott City, MD | |
| Regular School Nearby | 06-08 | Silver Spring, MD | |
| Regular School Nearby | PK-05 | Columbia, MD | |
| Regular School Nearby | 09-12 | Columbia, MD | |
| Regular School Nearby | PK-05 | Rockville, MD | |
| Regular School Nearby | PK-05 | Rockville, MD | |
| Regular School Nearby | PK-02 | Silver Spring, MD | |
| Regular School Nearby | PK-05 | Ellicott City, MD |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Howard Community College
|
College | 9.2 mi away | 10901 Little Patuxent Pkwy, Columbia, MD, 21044-3197 |
4435181000
|
|
GLENWOOD BRANCH
|
Library | 1.9 mi away | 2350 ROUTE 97, COOKSVILLE, MD, 21723 |
(410) 313-5577
|
|
Maryland University of Integrative Health
|
College | 10.8 mi away | 7750 Montpelier Road, Laurel, MD, 20723 |
4108889048
|
|
OLNEY BRANCH
|
Library | 9.0 mi away | 3500 OLNEY-LAYTONSVILLE ROAD, OLNEY, MD, 20832 |
(240) 773-9545
|
|
Lincoln College of Technology-Columbia
|
College | 12.5 mi away | 9325 Snowden River Pky, Columbia, MD, 21046 |
410290710041500
|
|
MOUNT AIRY BRANCH
|
Library | 9.3 mi away | 705 RIDGE AVENUE, MOUNT AIRY, MD, 21771 |
(410) 386-4470
|
|
Montgomery College
|
College | 14.4 mi away | 51 Mannakee Street, Rockville, MD, 20850 |
2405675000
|
|
DAMASCUS BRANCH
|
Library | 9.3 mi away | 9701 MAIN ST., DAMASCUS, MD, 20872 |
(240) 773-9444
|
|
North American Trade Schools
|
College Vocational | 14.9 mi away | 6901 Security Blvd, Suite 16, Baltimore, MD, 21244 |
4102984844
|
|
ELDERSBURG BRANCH
|
Library | 9.5 mi away | 6400 W. HEMLOCK DR., ELDERSBURG, MD, 21784 |
(410) 386-4460
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at DAMASCUS 3 SSW, MD US, located 11.0 miles from ZCTA5 21738. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 39.1° | 24.5° | 31.8° | 3.41" | 9.4" |
| February | 42.6° | 26.1° | 34.4° | 2.98" | 11.1" |
| March | 51.6° | 33.1° | 42.4° | 4.04" | 4.8" |
| April | 63.9° | 42.9° | 53.4° | 3.62" | 0.2" |
| May | 72.5° | 52.8° | 62.6° | 4.35" | 0.0" |
| June | 80.2° | 61.5° | 70.9° | 4.67" | 0.0" |
| July | 84.3° | 66.0° | 75.1° | 4.49" | 0.0" |
| August | 82.6° | 64.6° | 73.6° | 4.18" | 0.0" |
| September | 75.7° | 57.6° | 66.7° | 4.76" | 0.0" |
| October | 64.5° | 46.5° | 55.5° | 4.01" | 0.0" |
| November | 53.3° | 36.4° | 44.9° | 3.49" | 0.8" |
| December | 43.5° | 29.5° | 36.5° | 3.89" | 5.1" |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Lisbon CDP | CDP | 4.6 mi | — |
| Brookeville town | Town | 7.0 mi | — |
| Sykesville town | Town | 7.0 mi | — |
| Highland CDP | CDP | 7.4 mi | — |
| Laytonsville town | Town | 7.6 mi | — |
| Damascus CDP | CDP | 9.1 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 21738. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.