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Thurmont town, MD

ZIP Code 21788 — Thurmont town, MD Demographics & Data

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Middle ClassLow Snow Area

Map, Quick Facts & Location

Quick Facts

Local time
Population
11,919
Median Income
$93,717
+25% vs US avg
Home Value
$342,700
-2% vs US avg
Median Rent
$906
-22% vs US avg
Median Age
46.5 yrs
+20% vs US avg
Area Code
Congress
Top Ancestry
GermanEnglishIrish
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Location
Coordinates
39.5900, -77.4139
Elevation
1,610 ft
Land Area
66.8 sq mi
Water Area
0.5 sq mi (1% water)

At a glance

Population
11,919
Density
N/A
Median income
$93,717
+25% vs US avg
Home value
$342,700
-2% vs US avg
Median rent
$906
-22% vs US avg
Timezone

Overview of ZIP Code 21788

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What to know about ZIP 21788

ZIP code 21788 covers Thurmont, MD in Frederick County with a population of about 11,919.

At a glance, the area shows median age of 46.5 versus a U.S. median of about 38.9.

It sits in telephone area codes 227, 240, 301; U.S. House district MD-6; the WASHINGTON, DC (HAGRSTWN) media market.

Income and economy in Thurmont, MD

Median household income in ZIP 21788 is about $93,717 — about 25% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 9.4%; unemployment rate near 3.0%; 29.5% of adults with a bachelor’s degree or higher (about 4.2 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Construction, Healthcare, and Education; about 14.4% of workers reporting work-from-home (roughly in line with the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Housing and affordability in ZIP 21788

Median home value is about $342,700 — about even with the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $906 (about 22% below the U.S. median rent ($1,163)), and owner-occupancy near 81.6% (about 16.2 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 21788 in Thurmont, MD, a household would need roughly $94,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $2,201. That is roughly in line with the local median household income ($93,717). Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

Climate risk and migration signals

FEMA’s National Risk Index rates natural-hazard risk for Thurmont town, MD as Relatively Low (composite score 74.2), which is elevated versus much of the country. The strongest component scores on US5 are flood (81.6) and hurricane (79.3). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Thurmont town, MD show little to no average snow and around 48.6 inches of annual precipitation.

IRS migration statistics show a net inflow of about 700 for ZIP 21788 (Thurmont town, MD) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.

Nearby (from this ZIP)

Airport HGR (18.6 miles (30.0 km)) · Mount St. Mary's University (7.1 miles (11.5 km)) · Catoctin Mountain Park (5.0 miles (8.0 km)) · VA: Fort Detrick VA Outpatient Clinic (10.4 miles (16.8 km))

Full lists and map pins are in the Infrastructure section below.