Postal Codes

17236 ZIP Code

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ZIP code 17236 covers Mercersburg, Pennsylvania, with a population of about 8,875 and a median household income of $81,074.

Population
8,87571 per square mile
Median age
41.62.9 points above the US average
Median household income
$81,0741.1× the Pennsylvania median
Poverty rate
8.8%3.6 points below the US average
Typical home value
$297,062up 19.7% in five years
Median rent
$98615% below the Pennsylvania median
Degree or higher
21.5%13.5 points below the US average
Homeownership
79.8%14.8 points above the US average
Time zone
Eastern UTC-05:00observes daylight saving time
Businesses
149

Where 17236 is

Mercersburg, Pennsylvania — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population8,875
Median age41.6
Family households67.7%
Born outside the US1.6%
Speaks a language other than English at home1.7%
White (non-Hispanic)93.6%
Black (non-Hispanic)1.2%
Asian (non-Hispanic)0.6%
Hispanic or Latino1.3%
Veterans6.5%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$81,074
Income per person$39,478
Poverty rate8.8%
Households on SNAP or cash assistance7.7%

Household income distribution

Under $10k3.3%
$10–15k1.0%
$15–20k2.4%
$20–25k3.1%
$25–30k2.5%
$30–35k4.0%
$35–40k4.8%
$40–45k5.3%
$45–50k3.7%
$50–60k7.3%
$60–75k8.6%
$75–100k17.0%
$100–125k9.8%
$125–150k6.7%
$150–200k11.4%
$200k or more9.2%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed4,250
Mean adjusted gross income$75,103
Returns declaring $200,000 or more4.7%
Returns, under $25k27.8%
Returns, $25k–$50k21.4%
Returns, $50k–$75k17.4%
Returns, $75k–$100k10.6%
Returns, $100k–$200k18.1%
Returns, $200k or more4.7%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$250,100
Median gross rent$986
Rent as a share of household income25.4%
Owner-occupied79.8%
Vacant homes10.7%
Median year built1971

What the homes are

Detached house79%
Attached house7%
2 to 4 units4.3%
5 to 19 units1.3%
20 or more units2.3%
Mobile home6%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$297,062as of 2026-07
Typical home value, 1 yearup 2.6%
Typical home value, 5 yearsup 19.7%
Typical home value, 10 yearsup 61.2%
Typical home value since 2000
200920172026$297,062$172,602

$206,927 in 2009 to $297,062 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate2.7%
Bachelor's degree or higher21.5%
High school diploma or higher88.9%
Works from home12.7%
Drives to work alone76.9%
Takes public transport0.6%
Commutes 45 minutes or more21.4%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Colorectal screening67.2% 2.9 pts above the national average of 64.3%
Visited a dentist63.2% 1.9 pts above the national average of 61.3%
Mammography use76.5% 0.6 pts above the national average of 75.9%
Sleeps under 7 hours38.2% 1.8 pts above the national average of 36.4%
All natural teeth lost13.3% same as the national average of 13%
Business and employment

Census ZIP Code Business Patterns 2022

Business establishments149
People employed2,114
Annual payroll$80,610,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 61.4% of US census tracts
FEMA ratingRelatively Low to Relatively Moderate across the 3 census tracts this ZIP code covers
Expected annual loss63.7 out of 100
Community resilience51.4 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Landslide93.7Relatively Moderate at its worst in this ZIP code
Drought92.8Relatively Moderate at its worst in this ZIP code
Hurricane86.2Relatively Moderate at its worst in this ZIP code
Strong wind85.2Relatively High at its worst in this ZIP code
River flooding79.6Relatively High at its worst in this ZIP code
Winter weather79.3Relatively High at its worst in this ZIP code
Wildfire71.2Relatively Low at its worst in this ZIP code
Hail69.9Relatively Moderate at its worst in this ZIP code
Lightning55.4Relatively Moderate at its worst in this ZIP code
Earthquake52Relatively Low at its worst in this ZIP code
Heat wave50.1Relatively Low at its worst in this ZIP code
Tornado45.2Relatively Low at its worst in this ZIP code
Avalanche35.5Very Low at its worst in this ZIP code
Ice storm31.2Relatively Low at its worst in this ZIP code
Cold wave28Relatively Low at its worst in this ZIP code
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Compared with Pennsylvania and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPPennsylvaniaUnited States
Median household income$81,074$76,081$78,538
Income per person$39,478$43,104$43,289
Poverty rate8.8%11.8%12.4%
Median home value$250,100$240,500$303,400
Median gross rent$986$1,162$1,348
Homeownership79.8%69.3%65%
Bachelor's degree or higher21.5%34.5%35%
Unemployment rate2.7%5.2%5.2%
Works from home12.7%13.8%13.5%
Born outside the US1.6%7.4%13.9%
Median age41.640.938.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationHAGERSTOWN WASHINGTON CO AP, MD US19.6 km away
Rain in a year36 in

Average high and low by month

January40.5°F / 25.3°F2.46 in rain
February43.6°F / 27.3°F1.97 in rain
March52.8°F / 34°F3.04 in rain
April64.9°F / 44.3°F3.33 in rain
May74.4°F / 54.5°F3.55 in rain
June82.6°F / 63.7°F3.36 in rain
July87.3°F / 67.9°F2.94 in rain
August84.9°F / 65.7°F2.9 in rain
September77.8°F / 58.9°F3.83 in rain
October66°F / 47.4°F2.76 in rain
November54.4°F / 37.4°F2.63 in rain
December44°F / 29.8°F2.83 in rain
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarket28% of this ZIP code's area
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 2 school districts, so the address decides which one, not the ZIP code.

Tuscarora School District95.3% of this ZIP code's land area
Southern Fulton School District4.7% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability33more vulnerable than 33% of US census tracts
Socioeconomic status37more vulnerable than 37% of US census tracts
Household characteristics31more vulnerable than 31% of US census tracts
Racial and ethnic minority status14more vulnerable than 14% of US census tracts
Housing type and transport49more vulnerable than 49% of US census tracts
Walkability4.7 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

17231 Lemasters, PA6.1 km away
17212 Big Cove Tannery, PA13.4 km away
17225 Greencastle, PA14.3 km away
17224 Fort Loudon, PA15.1 km away
17252 Saint Thomas, PA15.3 km away
17233 Mc Connellsburg, PA15.6 km away
21722 Clear Spring, MD17.1 km away
17235 Marion, PA18.4 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Franklin County95.3% of this ZIP code's land area
Fulton County4.7% of this ZIP code's land area
Time zoneEastern (UTC-05:00 standard)
Daylight saving timeObserved
Land area125.66 sq mi
Water area0.07 sq mi
Population density71 people per sq mi
Latitude, longitude39.8195, -77.9073

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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