Residential delivery area · Pennsylvania
ZIP Code 17236: Mercersburg, PA
ZIP code 17236 uses the postal name Mercersburg, Pennsylvania and lies mostly in Franklin County (95% of its land) with the rest in Fulton County (Census 2020 ZIP-county file). About 8,800 people live there (Census Bureau, ACS 2020-2024). Median household income is $79,271 (Census Bureau, ACS 2020-2024). By Census place, under 1% of its land lies in Mercersburg; more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Mercersburg · its only residential ZIP
- County
- Franklin County (95%); Fulton County (5%)
- Census places
- Mercersburg
- Metro area
- Chambersburg, PA
- House district
- PA-13 119th Congress
- State
- Pennsylvania
- Time zone
- Eastern
- Land area
- 125.7 sq mi · 70 people per sq mi
Where is ZIP code 17236?
17236 centers on 39.800°, -77.947° and covers 125.7 square miles of land plus 0.1 of water. It borders 9 ZIP codes: 17212, 21722, 17225, 21711, 17252, 17238, 17233, 17224, 21750.
The map draws ZIP code areas only. For the streets inside 17236, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 17236 compare with the rest of Franklin County?
| Measure | 17236 | In Franklin County | In PA |
|---|---|---|---|
| People (ACS 2020-2024) | 8,845 | 7th of 31 | 454th of 1,833 |
| Median household income | $79k | 6th of 10 | 404th of 1,015 |
| Median home value | $240k | 5th of 11 | 434th of 1,069 |
Its median household income is higher than in 61% of U.S. residential ZIP codes, and it is denser than 48% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 17236?
The 2020 Census counted 8,620 people in 17236; the ACS, which samples households over 2020-2024, estimates 8,845. Between the 2010 and 2020 censuses its population fell 3.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 8,845
- 2020 Census count
- 8,620−3.1% since 2010 (8,895)
- Households
- 3,492
- Median age
- 45.0
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 17236?
Of the 8,845 people the ACS estimates in 17236, 19.1% are under 18 and 18.6% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (92.4%).
- Under 1819.1%
- 18 to 6462.3%
- 65 and older18.6%
- White, not Hispanic92.4%
- Other or two or more3.8%
- Hispanic or Latino1.9%
- Black, not Hispanic1.4%
- Asian, not Hispanic0.5%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 17236 earn?
Median household income is $79,271 (ACS 2020-2024), the 6th highest of the 10 ranked ZIP codes in Franklin County. It is not measurably different from 2015-2019 ($81,102 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $79,271±$11,676
- Income per person
- $40,110
- Below the poverty line
- 10.9%
- Unemployed (of the labor force)
- 4.1%
- Adults 25+ with a bachelor's degree
- 20.9%
- Adjusted gross income per tax return, 2022
- $75,1034,250 returns; wages 68% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 17236?
FHFA's house price index for 17236, built from repeat sales and appraisals of the same homes, rose 78% from 2015 to 2025 and rose 59% from 2020 to 2025, and moved +1.9% in 2025.
- Median home value (owners' estimate)
- $239,600
- Median gross rent
- $1,143
- Homes owned by their occupants
- 76.8%
- Housing units
- 3,798
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 17236?
152 business establishments had a location in this ZIP code in 2023, 7 fewer than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction24
- Retail trade21
- Other services (except public administration)21
- Manufacturing18
- Accommodation and food services14
- Professional, scientific, and technical services11
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 17236?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 17212 | Big Cove Tannery | 750 | $84k | 6.3 mi |
| 21722 | Clear Spring, MD | 6,721 | $88k | 9.5 mi |
| 17225 | Greencastle | 20,347 | $89k | 9.9 mi |
| 21711 | Big Pool, MD | 929 | $91k | 9.9 mi |
| 17252 | Saint Thomas | 4,038 | $74k | 10.0 mi |
| 17238 | Needmore | 1,782 | $65k | 10.6 mi |
| 17233 | McConnellsburg | 4,961 | $61k | 12.3 mi |
| 17224 | Fort Loudon | 1,603 | $115k | 12.8 mi |
| 21750 | Hancock, MD | 3,417 | $61k | 18.1 mi |
| 21767 | Maugansville, MD | 1,031 | $58k | 12.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.