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ZIP code

20634

Great Mills, MD

STANDARD

20634 covers Great Mills in St. Mary's County, with 6,976 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

ACS 2023 population

6,976

Median household income

$117,431

Median home value

$334,800

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 20634. Methodology

ZIP code map of 20634

Census ZCTA boundary for ZIP 20634 in Great Mills, Maryland
Census ZCTA boundary for ZIP 20634 in Great Mills, Maryland. A ZCTA is not the same as a USPS ZIP code. Boundaries: U.S. Census Bureau. Methodology · Data sources
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About ZIP code 20634

Type

STANDARD

City

Great Mills

County

St. Mary's County

Timezone

America/New_York

Area codes

227, 240, 301

Land area

7.0 sq mi

Water area

0.07 sq mi

Households

2,872

Median gross rent

$1,689

More enterprise fields

Timezone
America/New_York
Area Codes
227, 240, 301
World Region
NA
Country
US

Commercial ZIP directory · not ACS

Commercial ZIP directory population_count for ZCTA 20634. Not ACS. Methodology

People in 20634

Race

  • White3,893
  • Black or African American1,907
  • American Indian or Alaska Native16
  • Asian309
  • Native Hawaiian and Pacific Islander7
  • Other race178
  • Two or more races674

Hispanic or Latino (any race): 571

Age

  • Under 101,039
  • 10 to 19870
  • 20 to 291,061
  • 30 to 391,121
  • 40 to 49900
  • 50 to 591,017
  • 60 to 69623
  • 70 to 79250
  • 80 and older103

Income and housing in 20634

Poverty rate

4.3%

Median earnings

$56,004

Median household income

$117,431

Median home value

$334,800

Median gross rent

$1,689

Education

  • High school graduate97.5%
  • Bachelor's degree40.6%
  • Graduate degree16.7%

Places covering 20634

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.

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.

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

26.2% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 20634

IRS populationACS population
8,8544,427020052023

Hover the chart or read the table below (Year | ACS | IRS).

Population history. Year | ACS population | IRS population. ACS and IRS are separate series. Blank cells mean that source did not publish a count for the year.
YearACS populationIRS population
20056,773
20066,712
20076,885
20086,795
20096,952
20107,043
20116,6837,007
20126,2527,110
20136,5627,100
20146,7697,150
20156,8717,040
20167,1146,880
20177,4176,750
20187,3346,670
20196,4786,660
20206,9616,550
20218,1986,360
20227,8536,510
20236,976

ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.

ZIP codes near 20634

12 nearest ZIP centroids (any distance)

  1. 20620Callaway1.4 miPop 1,160 · Income $154,188
  2. 20667Park Hall3.3 miPop 98 · Income —
  3. 20653Lexington Park3.8 miPop 26,799 · Income $97,923
  4. 20619California3.9 miPop 14,743 · Income $114,848
  5. 20692Valley Lee4.2 miPop 438 · Income $120,491
  6. 20686Saint Marys City5.2 miPop 949 · Income —
  7. 20670Patuxent River5.7 miPop 1,577 · Income $70,945
  8. 20630Drayden5.9 miPop 346 · Income $227,581
  9. 20690Tall Timbers6.1 miPop 1,046 · Income $129,236
  10. 20688Solomons6.2 miPop 1,113 · Income $88,902
  11. 20674Piney Point6.4 miPop 638 · Income $126,029
  12. 20650Leonardtown7.4 miPop 15,979 · Income $139,688

ZIP centroids within 2 miles

ZIP centroids within 2 miles of 20634, measured by Census internal point.
ZIPCityStateDistance (miles)ACS populationMedian income
20620CallawayMD1.4 mi1,160$154,188

ZIPs within 2 miles of this place

Default is 2 miles. Distances are between ZIP centroids. Widen the radius if nothing is in range.

20634 Great Mills, MD

Looking up ZIP codes within 2 miles of 20634 Great Mills, MD, measured by centroid distance.

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ZIP code 20634 FAQ

What city is ZIP code 20634 in?
20634 is in Great Mills, MD.
What county is 20634 in?
20634 is in St. Mary's County.
What is the median household income in 20634?
The median household income in 20634 is $117,431.
Which ZIP codes are near 20634?
Use the radius tool on this page to list ZIP codes within a chosen distance of 20634.