Thurmont, MD 21788 ZIP Code Profile

Related Place Profiles:
Graceham, MD | Thurmont, MD

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ZIP Code 21788: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Thurmont, MD 21788

Acceptable Alternative
Graceham, MD 21788

  • ZIP Code Type: STANDARD
  • County: Frederick County
  • Centroid: Latitude 39.601, Longitude -77.429
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 267
  • PO Box Addresses: 123
  • Residential Addresses: 4,511
    • Multi-Family Addresses: 98
    • Single Family Addresses: 4,413

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


21788 ZIP Code Map

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Thurmont, MD 21788 Data & Demographics (As of July 1, 2017)


Total Population 10,934
Daytime Population: Workers 4,128
Daytime Population: Residents 5,101
Total Daytime Population (TDP) 9,229
Ratio TDP/Total Population1 0.84
Population in Households 10,887
Population in Familes 9,243
Population in Group Qrtrs 47
Population Density2 192
Diversity Index3 15


Median Household Income $72,985
Average Household Income $84,442
Per Capita Income $32,462


Total Housing Units 4,471 (100%)
Owner Occupied HU 3,191 (71.4%)
Renter Occupied HU 992 (22.2%)
Vacant Housing Units 288 ( 6.4%)
Median Home Value $268,822
Average Home Value $309,464


Total Households 4,183
Average Household Size 2.6
Family Households 3,066
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.18% 0.38%
Households 0.18% 0.37%
Families 0.02% 0.24%
Median Household Income   1.37%
Per Capita Income   2.35%

Thurmont, MD 21788 - Peer Comparisons by Rank and Percentile

The table below compares 21788 to the other 456 ZIP Codes in Maryland by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 177 61st
Population Density # 300 34th
Diversity Index # 407 11th
Median Household Income # 246 46th
Per Capita Income # 277 39th

Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.

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