ZIP Code 21157, Maryland
ZIP Code 21157 profile, demographic data, and geographic information.
ZCTA5 21157 is a 5-digit ZIP Code area located in Carroll County, Maryland. As of official census estimates, it has a reported population of 38,984. The land area covers 77.69 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 38,984 | ±1,642 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 43.2 yrs | ±1.4 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 14,785 | ±579 | 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 | 15,471 | ±521 |
| Occupied Housing Units | 14,785 | ±579 |
| Vacant Housing Units | 686 | ±265 |
| Median Home Value | $424,100 | ±$12,444 |
| Median Gross Rent | $1,331 | ±$52 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $104,966 | ±$9,822 |
| Per Capita Income | $49,793 | ±$2,198 |
| Poverty Rate | 6.7% | ±1.2% |
| Population Below Poverty Level | 2,464 | ±456 |
| Unemployment Rate | 4.1% | ±1.1% |
| Civilian Labor Force, Employed | 20,494 | ±1,115 |
| Broadband Internet Rate | 90.5% | ±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: 177,108 (2024)
ID: 105977
|
County | Official County Government |
Contact: BUDGET ANALYST
225 N CENTER ST, WESTMINSTER MD 21157-5194
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | KG-05 | Littlestown, PA | |
| Regular School Nearby | PK-05 | Baltimore, MD | |
| Regular School Nearby | PK | Baltimore, MD | |
| Career and Technical School Nearby | 11-12 | Westminster, MD | |
| Special Education School Nearby | PK-12 | Westminster, MD | |
| Regular School Nearby | PK-05 | Sykesville, MD | |
| Regular School Nearby | PK-05 | Reisterstown, MD | |
| Regular School Nearby | 09-12 | Sykesville, MD | |
| Regular School Nearby | PK-05 | Reisterstown, MD | |
| Regular School Nearby | PK-05 | Randallstown, 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 |
|---|---|---|---|---|
|
Carroll Community College
|
College | 1.2 mi away | 1601 Washington Rd, Westminster, MD, 21157 |
4103868000
|
|
DETENTION CENTER LIBRARY
|
Library | 1.7 mi away | 100 N. COURT STREET, WESTMINSTER, MD, 21157 |
(410) 386-2636
|
|
McDaniel College
|
College | 2.7 mi away | 2 College Hill, Westminster, MD, 21157 |
4108487000
|
|
EXPLORATION COMMONS AT 50 EAST
|
Library | 1.9 mi away | 50 EAST MAIN ST, WESTMINSTER, MD, 21157 |
(443) 293-3000
|
|
Stevenson University
|
College | 13.9 mi away | 100 Campus Circle, Owings Mills, MD, 21117 |
4104867000
|
|
OUTREACH MOBILE SERVICES
|
Library | 1.9 mi away | 50 E. MAIN STREET, WESTMINSTER, MD, 21157 |
(410) 386-4450
|
|
Empire Beauty School-Owings Mills
|
College Vocational | 15.5 mi away | 9616 Reisterstown Rd, Suite 105, Owings Mills, MD, 21117 |
8009204593
|
|
STORYTIME EXPRESS 1
|
Library | 1.9 mi away | 50 EAST MAIN STREET, WESTMINSTER, MD, 21157 |
(410) 386-4450
|
|
Ner Israel Rabbinical College
|
College | 16.5 mi away | 400 Mount Wilson Ln, Baltimore, MD, 21208 |
4104847200
|
|
STORYTIME EXPRESS 2
|
Library | 1.9 mi away | 50 EAST MAIN STREET, WESTMINSTER, MD, 21157 |
(410) 386-4450
|
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 MILLERS 4 NE, MD US, located 15.3 miles from ZCTA5 21157. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 39.5° | 23.7° | 31.6° | 3.58" | 9.7" |
| February | 42.9° | 25.3° | 34.1° | 2.94" | 10.8" |
| March | 51.8° | 31.9° | 41.8° | 4.14" | 6.3" |
| April | 64.5° | 41.8° | 53.2° | 3.84" | 0.5" |
| May | 73.2° | 51.3° | 62.3° | 3.96" | 0.0" |
| June | 80.8° | 60.0° | 70.4° | 3.80" | 0.0" |
| July | 84.9° | 64.4° | 74.6° | 4.73" | 0.0" |
| August | 83.1° | 62.6° | 72.9° | 4.19" | 0.0" |
| September | 76.7° | 56.3° | 66.5° | 5.11" | 0.0" |
| October | 65.4° | 45.4° | 55.4° | 4.19" | 0.2" |
| November | 53.9° | 35.9° | 44.9° | 3.36" | 1.0" |
| December | 43.7° | 28.4° | 36.1° | 4.04" | 5.6" |
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 |
|---|---|---|---|
| Westminster city | City | 2.5 mi | — |
| New Windsor town | Town | 6.2 mi | — |
| Hampstead town | Town | 8.3 mi | — |
| Manchester town | Town | 8.9 mi | — |
| Eldersburg CDP | CDP | 10.1 mi | — |
| Union Bridge town | Town | 10.2 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 21157. • 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.