Residential delivery area · Pennsylvania
ZIP Code 17055: Mechanicsburg, PA
ZIP code 17055 uses the postal name Mechanicsburg, Pennsylvania and lies mostly in Cumberland County (88% of its land) with the rest in York County (Census 2020 ZIP-county file). About 42,000 people live there (Census Bureau, ACS 2020-2024), the less populous of Mechanicsburg's 2 residential ZIP codes. Median household income is $99,077 (Census Bureau, ACS 2020-2024). By Census place, 6% of its land lies in Mechanicsburg; 94% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Mechanicsburg · 2 residential ZIPs
- County
- Cumberland County (88%); York County (12%)
- Census places
- Mechanicsburg
- Metro area
- Harrisburg-Carlisle, PA
- House district
- PA-10 119th Congress
- State
- Pennsylvania
- Time zone
- Eastern
- Land area
- 39.2 sq mi · 1,071 people per sq mi
Where is ZIP code 17055?
17055 centers on 40.178°, -76.998° and covers 39.2 square miles of land plus 0.3 of water. It borders 8 ZIP codes: 17027, 17050, 17011, 17019, 17007, 17339, 17070, 17015.
The map draws ZIP code areas only. For the streets inside 17055, 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 17055 compare with the rest of Mechanicsburg?
| Measure | 17055 | In Mechanicsburg | In Cumberland County | In PA |
|---|---|---|---|---|
| People (ACS 2020-2024) | 42,006 | 2nd of 2 | 2nd of 20 | 44th of 1,833 |
| Median household income | $99k | 2nd of 2 | 3rd of 16 | 193rd of 1,015 |
| Median home value | $285k | 2nd of 2 | 5th of 16 | 301st of 1,069 |
Its median household income is higher than in 80% of U.S. residential ZIP codes, and it is denser than 79% 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 17055?
The 2020 Census counted 40,353 people in 17055; the ACS, which samples households over 2020-2024, estimates 42,006. Between the 2010 and 2020 censuses its population grew 17.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 42,006
- 2020 Census count
- 40,353+17.9% since 2010 (34,237)
- Households
- 18,318
- Median age
- 41.4
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 17055?
Of the 42,006 people the ACS estimates in 17055, 19.9% are under 18 and 22.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.8%).
- Under 1819.9%
- 18 to 6457.3%
- 65 and older22.7%
- White, not Hispanic85.8%
- Other or two or more4.4%
- Black, not Hispanic3.5%
- Hispanic or Latino3.5%
- Asian, not Hispanic2.8%
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 17055 earn?
Median household income is $99,077 (ACS 2020-2024), the 3rd highest of the 16 ranked ZIP codes in Cumberland County. It is not measurably different from 2015-2019 ($90,229 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $99,077
- Income per person
- $55,150
- Below the poverty line
- 4.8%
- Unemployed (of the labor force)
- 2.2%
- Adults 25+ with a bachelor's degree
- 48.3%
- Adjusted gross income per tax return, 2022
- $97,42622,790 returns; wages 65% 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 17055?
FHFA's house price index for 17055, built from repeat sales and appraisals of the same homes, rose 74% from 2015 to 2025 and rose 52% from 2020 to 2025, and moved +2.1% in 2025.
- Median home value (owners' estimate)
- $284,500
- Median gross rent
- $1,446
- Homes owned by their occupants
- 70.8%
- Housing units
- 18,906
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 17055?
1,041 business establishments had a location in this ZIP code in 2023, 25 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services155
- Other services (except public administration)125
- Health care and social assistance118
- Retail trade91
- Accommodation and food services87
- Administrative and support and waste management and remediation services78
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 17055?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 17027 | Grantham | 2,801 | $87k | 1.6 mi |
| 17050 | Mechanicsburg | 43,571 | $114k | 5.1 mi |
| 17011 | Camp Hill | 39,664 | $93k | 5.4 mi |
| 17019 | Dillsburg | 19,594 | $94k | 5.9 mi |
| 17007 | Boiling Springs | 5,865 | $117k | 6.9 mi |
| 17339 | Lewisberry | 6,281 | $97k | 7.1 mi |
| 17070 | New Cumberland | 16,830 | $88k | 7.7 mi |
| 17015 | Carlisle | 24,385 | $87k | 12.4 mi |
| 17043 | Lemoyne | 5,852 | $61k | 7.1 mi (near) |
| 17323 | Franklintown | 83 | – | 7.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.