ZIP Code 21791 - Union Bridge Maryland

ZIP Code 21791 is located in Union Bridge Maryland. Portions of 21791 are also in Libertytown. 21791 is primarily within Frederick County, with some portions in Carroll County. Regionally, it is located in Metro DC.

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ZIP Code 21791 Quick Stats

ZIP Code NameUnion Bridge
Primary CountyFrederick County
ZIP Code TypeStandard
Population (2022)4,855
Area Code(s)240 / 301 / 410 / 443 / 667
Current Time
EDT

ZIP Code 21791 Map

21791 Demographics

21791 can be classified socioeconomically as Middle Class class compared to other ZIP Codes in Maryland based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 21791 is White. The majority race/ethnicity attending public schools in 21791 is White. The current unemployment level in 21791 is 2.9%.

Population4,855
Population Growth Rate0.00%
Population Density103 People per Square Mile
Total Households1,985
Percentage High Income Households7.5%
Median Household Income (2021)$93,578
Average Adjusted Gross Income (2020)$76,290
Current Unemployment Rate (April 2024)2.9%
Majority Race/EthnictyWhite - 94.60%
Public School Majority Race/EthnictyWhite - 88.09%

21791 Race/Ethnicty Breakdown

Race/EthnictyTotalPercentage
White4,49994.48%
Black781.64%
Hispanic641.34%
Asian1112.33%
Native American40.08%
Hawaiian/Pac. Islander60.13%

21791 Public School Race/Ethnicty Breakdown

Race/EthnictyTotalPercentage
White1,14691.83%
Black312.48%
Hispanic594.73%
Asian60.48%
Native American50.4%
Hawaiian/Pac. Islander10.08%

21791 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College37610.63%
Bachelor Degree65918.63%
High School Diploma1,48341.92%
No High School Diploma230.65%
GED or Alternate1002.83%
1 or More Years of College46013%
Associates Degree2657.49%
Masters Degree1103.11%
Professional Degree300.85%
Doctorate Degree320.9%

21791 Geography

Coordinates39.53559494,-77.18948364
Adjacent ZIP Codes
Cities/Towns in 21791
RegionsMetro DC
Metro Baltimore
Metropolitan/Micropolitan Stat AreasWashington-Arlington-Alexandria, DC-VA-MD-WV
Baltimore-Columbia-Towson, MD
Time ZoneEastern Daylight Time
IANA TimezoneAmerica/New_York
Area47 Square Miles

21791 Politics

US Congressional Districts in 21791
Maryland State Senate Districts in 21791
Maryland State House of Delegates Districts in 21791

21791 Weather and Climate Data

Plant Hardiness ZoneZone 6b: -5F to 0F
Average First Frost DateOctober 1 - 10
Average Last Frost DateMay 1 - 10
Koppen-Geiger Climate ZoneDfa - Humid Continental Hot Summers
Ecoregion64c - Piedmont Uplands

21791 Annual Climate Data

JanFebMarAprMayJunJulAugSepOctNovDecAnnual
Avg Min Temp (°F)20223038495863615341322541
Avg Max Temp (°F)39445364748286847766554464
Avg Precip (In.)3.372.663.733.474.393.983.533.44.023.53.483.2142.74

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