Mold remediation in Mount Joy Township

Mount Joy has the most unusual age profile on this list: the pre-1940 and pre-1950 shares are almost identical, which means almost nothing was built here during the 1940s.

Reading the housing data

The Census reports 12.3 percent of housing built before 1940 and 12.5 percent before 1950, a gap of two-tenths of a percentage point, against a median of 1980. So the township is effectively split between pre-war housing and construction from 1950 onward, with very little between.

Median year built1980
Built before 194012.3%
Built before 195012.5%
Housing units1,556
Owner occupied85.8%
Population, 2020 Census3,782
CountyAdams County
Locationabout 6 miles southeast

U.S. Census Bureau, American Community Survey 2024 5-year estimates (tables B25035, B25034, B25003), accessed via the Census Reporter API, retrieved 2026-09-15. 2020 Census figures as cited by each municipality’s Wikipedia article, retrieved 2026-09-15. Secondary source.

What building age does and does not tell you

Where a housing stock splits into two eras like that, general advice aimed at "older homes" or "newer homes" will be wrong for roughly half of it. Which half a house belongs to is worth establishing before anyone quotes a scope.

Local detail

The township holds 1,556 housing units with 85.8 percent owner occupancy, and sits about 6 miles southeast of Gettysburg borough.

Gettysburg Mold Remediation is an independent referral service operated by Front Door Digital LLC. We do not inspect, test or remediate mold ourselves, and we are not a contractor. We connect homeowners with independent local companies that do this work.

Read next

The job most often needed here is crawl space mold remediation, where the process, published costs and the questions worth asking are set out in full. For pricing, testing, insurance and whether you can do it yourself, see the questions homeowners actually ask.

Nearby: Fairfield, Carroll Valley, Biglerville, Arendtsville · all service areas