ZIP Code 20634 - Great Mills Maryland

20634 Overview

ZIP Code 20634 is located in Great Mills Maryland. Portions of 20634 are also in California and Callaway. 20634 is entirely within Saint Marys County. Regionally, 20634 is located in Metro DC.

Stats Demographics Geography Politics Schools Climate Related Pages

ZIP Code 20634 Quick Stats

ZIP Code NameGreat Mills
Primary CountySaint Marys County
ZIP Code TypeStandard
Population (2022)7,853
Area Code(s)240 / 301
Current Time
EST

ZIP Code 20634 Map

20634 Demographics

20634 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 20634 is White. The majority race/ethnicity attending public schools in 20634 is African American. The current unemployment level in 20634 is 2.8%.

Population7,853
Population Growth Rate10.53%
Population Density1,006 People per Square Mile
Total Households2,300
Percentage High Income Households3.9%
Median Household Income (2021)$116,123
Average Adjusted Gross Income (2021)$284,290
Current Unemployment Rate (November 2024)2.8%
Majority Race/EthnictyWhite - 64.20%
Public School Majority Race/EthnictyAfrican American - 40.44%

20634 Race/Ethnicty Breakdown

Race/EthnictyTotalPercentage
White5,08564.2%
Black2,33329.45%
Hispanic2783.51%
Asian2252.84%
Native American00%
Hawaiian/Pac. Islander00%

20634 Public School Race/Ethnicty Breakdown

Race/EthnictyTotalPercentage
White84235.11%
Black1,07244.7%
Hispanic37315.55%
Asian994.13%
Native American40.17%
Hawaiian/Pac. Islander80.33%

20634 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College2185.63%
Bachelor Degree75819.58%
High School Diploma1,10728.59%
No High School Diploma1102.84%
GED or Alternate1383.56%
1 or More Years of College87822.68%
Associates Degree2536.53%
Masters Degree3819.84%
Professional Degree290.75%
Doctorate Degree00%

20634 Geography

Coordinates38.24173737,-76.49405670
Adjacent ZIP Codes
Cities/Towns in 20634
RegionMetro DC
Metropolitan/Micropolitan Stat AreaCalifornia-Lexington Park, MD
Time ZoneEastern Standard Time
IANA TimezoneAmerica/New_York
Area8 Square Miles

20634 Weather and Climate Data

Plant Hardiness ZoneZone 7b: 5F to 10F
Average First Frost DateOctober 21 - 31
Average Last Frost DateMarch 21 - 31
Koppen-Geiger Climate ZoneCfa - Humid Subtropical Climate
Ecoregion65n - Chesapeake Rolling Coastal Plain

20634 Annual Climate Data

JanFebMarAprMayJunJulAugSepOctNovDecAnnual
Avg Min Temp (°F)27293645556469676149403248
Avg Max Temp (°F)45485767758388868069594967
Avg Precip (In.)3.733.094.243.244.233.694.3244.133.433.273.2944.67

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