US ZIP Code
21788

Thurmont, MD

Frederick County  ·  Maryland

● Active
👥 11,919 Population
💰 $93,717 Median HH Income
▲ 23% above avg ↑ 22% since 2019
🎂 46.5 Median Age ↑ 3% since 2019
🏠 $342,700 Median Home Value
▲ 23% above avg ↑ 33% since 2019
🎓 38.5% College Grads
≈ Avg
📊 3.0% Unemployment
▼ 38% below avg ↓ 24% since 2019
ZIP Code Details
ZIP Code21788
CityThurmont
StateMaryland (MD)
CountyFrederick County
Area Code227/240/301
Elevation480 ft
Latitude39.589979
Longitude-77.413861
TimezoneNew York (DST)
FIPS24021
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 50.3% (5,990) Female 49.7% (5,929) ♀

Race & Ethnicity

White: 88.8%Hispanic: 6%Black: 1.2%Asian: 0.7%Other: 3.1%Race
White88.8%
Hispanic6.0%
Black1.2%
Asian0.7%
Other3.1%

Age Breakdown

Under 5
4%
5–17
15%
18–24
7%
25–44
23%
45–64
31%
65+
9%

Key Indicators

Median Age46.5 yrs ↑ 3% since 2019
Avg Household Size2.47
Below Poverty9.4% ≈ Avg
College Grads38.5% ≈ Avg
Unemployment3.0% ▼ 38% below avg
No HS Diploma126 (1.6%)
HS Graduate3,098 (38.2%)
Some College1,006 (12.4%)
Associates758 (9.3%)
Bachelors675 (8.3%)
Graduate Degree2,446 (30.2%)

Education

No HS: 1.6%HS Grad: 38.2%Some College: 12.4%Associates: 9.3%Bachelors: 8.3%Graduate: 30.2%Edu
No HS1.6%
HS Grad38.2%
Some College12.4%
Associates9.3%
Bachelors8.3%
Graduate30.2%
Housing & Income

Housing Tenure

Owner: 81.6%Renter: 18.4%Tenure
Owner81.6%
Renter18.4%

Home Value Distribution

Under $50k
3%
$50k–100k
2%
$100k–150k
0%
$150k–200k
5%
$200k–300k
29%
$300k–500k
51%
Over $500k
10%

Financials

Median HH Income$93,717 ▲ 23% above avg ↑ 22% since 2019
Median Home Value$342,700 ▲ 23% above avg ↑ 33% since 2019
Home/Income Ratio3.7x (nat avg ~3.5x)
Median Rent$1,015/mo ↓ 8% since 2019
Total Units5,102
Vacant Units281
Avg HH Size2.47

Income Distribution

Under $25k
13%
$25k–50k
9%
$50k–75k
13%
$75k–100k
18%
$100k–150k
19%
$150k–200k
10%
Over $200k
18%
Employment & Commute

How People Get to Work

Drove Alone
82%
Public Transit
0%
Walked
2%
Work From Home
16%

Commute Time

Under 15 min
22%
15–30 min
42%
30–45 min
17%
Over 45 min
18%
Housing Stock

Year Built

Before 1940
3%
1940s–1950s
12%
1960s–1970s
11%
1980s–1990s
18%
2000+
57%

Summary

Total Units5,102
Vacant281
Owner Occupied81.6%
Renter Occupied18.4%
Avg HH Size2.47
Frequently Asked Questions
ZIP code 21788 is in Thurmont, MD, in Frederick County.
ZIP code 21788 is located in Maryland (MD).
ZIP code 21788 is in Frederick County, MD.
ZIP 21788 observes the New York timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 21788 is 11,919 people (ACS 2023).
The median household income in ZIP code 21788 is $93,717 (ACS 2023).
The median home value in ZIP 21788 is $342,700 (ACS 2023).
About ZIP Code 21788

ZIP code 21788 is located in Thurmont, Maryland, within Frederick County. With a population of 11,919, this is a lightly populated ZIP code with a mature community — the median age is 46.5 years. Economically, 21788 is a middle-income ZIP code: the median household income of $93,717 is above the national average.

Real estate in ZIP code 21788 represents a mid-range housing market. The median home value of $342,700 is above the national average. Renters can expect to pay around $1,015 per month in median rent. Homeownership is strong here — 81.6% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 33% since 2019.

The population of 21788 is primarily White (88.83%). Residents are moderately educated — 38.5% hold a bachelor's degree or higher, which is near the national average. Poverty affects a relatively small share of residents at 9.4%. Household income has grown by 22% since 2019.

The unemployment rate in 21788 stands at 3.0%, which is below the national average. About 14% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 75%.

Overall, ZIP code 21788 in Thurmont, MD is characterized as middle-income, moderately educated, a mature community, and predominantly owner-occupied. With 11,919 residents, a median household income of $93,717, and a median home value of $342,700, it offers a clear picture of life in this part of Maryland.