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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2023

Zip Code 20634, Great Mills, MD

ZIP Code 20634 Details

Zip Code:20634
City:Great Mills
State:MD [Maryland]
Multi County:No
City Alias(es):Great Mills
Area Code:240 / 301
City Type:P [Post Office]
Classification: [Non-Unique]
Time Zone:Eastern (GMT -05:00)
Observes Daylight Saving:Yes
Elevation:96 ft
State FIPS:24
County FIPS:037
Division:South Atlantic
Intro Date:<2004-10

ZIP Code 20634 2010 Census Demographics

Current Population:7,414
2010 Population:5,927
Households per ZIP Code:2,215
Average House Value:$284,200
Avg. Income Per Household:$116,123
Persons Per Household:2.67
White Population:4,113
Black Population:1,510
Hispanic Population:364
Asian Population:355
American Indian Population:68
Hawaiian Population:13
Other Population:145
Male Population:2,895
Female Population:3,032
Median Age:33.40 years
Male Median Age:33.20 years
Female Median Age:33.70 years

ZIP Code 20634 Other Demographics

# Residential Mailboxes:2,777
# Business Mailboxes:46
Total Delivery Receptacles:3,060
Number of Businesses:45
1st Quarter Payroll:$3,021,000
Annual Payroll:$14,734,000
# of Employees:304
Water Area:0.065 sq mi
Land Area:6.991 sq mi
118th Congressional District:05
118th Congressional Land Area:1481.24 sq mi
Single Family Delivery Units:1,283
Multi Family Delivery Units:119
# Residential Mailboxes:2,777
# Business Mailboxes:46
Total Delivery Receptacles:3,060

ZIP Code 20634 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 865 860 -5
Retired Workers: 530 545 +15
Disabled Workers: 180 160 -20
Widow(er)s and Parents: 55 50 -5
Spouses: 20 25 +5
Children: 80 80 0
65+: 570 575 +5
Monthly Benefits - All: $1,128,000 $1,146,000 +$18,000
Monthly Benefits - Retired Workers: $759,000 $802,000 +$43,000
Monthly Benefits - Widow(ers): $78,000 $75,000 ($3,000)

ZIP Code 20634 Statistical Areas

CBSA: 15680
CBSA Name: California-Lexington Park, MD
CBSA Type: Metro
CBSA Division: 
CBSA Division Name: 
CBSA Population:0
CBSA Division Population:0
MSA Name: 
PMSA Name: 
City State Key:V23596
Preferred Last Line Key:V23596
20632: Previous ZIP Code
Next ZIP Code: 20636


  1. U.S. Postal Service [Last Updated: 5/1/2023],
  2. Internal Data Creation [Last Updated: 5/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census American National Standards Institute (ANSI) [Last Updated: 5/1/2023],
  6. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],
  7. Centers for Medicare & Medicaid Services [Updated Yearly],