Residential delivery area · Pennsylvania
ZIP Code 18078: Schnecksville, PA
ZIP code 18078 uses the postal name Schnecksville, Pennsylvania and lies entirely in Lehigh County (Census 2020 ZIP-county file). About 7,900 people live there (Census Bureau, ACS 2020-2024). Median household income is $120,857 (Census Bureau, ACS 2020-2024). By Census place, 18% of its land lies in Schnecksville (a census-designated place); 82% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Schnecksville · its only residential ZIP
- County
- Lehigh County
- Census places
- Schnecksville census-designated place
- Metro area
- Allentown-Bethlehem-Easton, PA-NJ
- House district
- PA-7 119th Congress
- State
- Pennsylvania
- Time zone
- Eastern
- Land area
- 15.6 sq mi · 505 people per sq mi
Where is ZIP code 18078?
18078 centers on 40.671°, -75.621° and covers 15.6 square miles of land plus 0.1 of water. It borders 7 ZIP codes: 18065, 18069, 18037, 18080, 18053, 18104, 18066.
The map draws ZIP code areas only. For the streets inside 18078, 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 18078 compare with the rest of Lehigh County?
| Measure | 18078 | In Lehigh County | In PA |
|---|---|---|---|
| People (ACS 2020-2024) | 7,857 | 18th of 35 | 493rd of 1,833 |
| Median household income | $121k | 4th of 27 | 88th of 1,015 |
| Median home value | $385k | 8th of 28 | 130th of 1,069 |
Its median household income is higher than in 91% of U.S. residential ZIP codes, and it is denser than 72% 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 18078?
The 2020 Census counted 6,996 people in 18078; the ACS, which samples households over 2020-2024, estimates 7,857. Between the 2010 and 2020 censuses its population fell 1.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 7,857±922 (90% margin)
- 2020 Census count
- 6,996−1.1% since 2010 (7,074)
- Households
- 2,794
- Median age
- 38.8
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 18078?
Of the 7,857 people the ACS estimates in 18078, 28.5% are under 18 and 17.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.1%), then Hispanic or Latino (11.0%).
- Under 1828.5%
- 18 to 6453.6%
- 65 and older17.9%
- White, not Hispanic85.1%
- Hispanic or Latino11.0%
- Asian, not Hispanic2.0%
- Other or two or more1.9%
- Black, not Hispanic0.0%
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 18078 earn?
Median household income is $120,857 (ACS 2020-2024), the 4th highest of the 27 ranked ZIP codes in Lehigh County. It is not measurably different from 2015-2019 ($110,922 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $120,857±$15,831
- Income per person
- $64,076
- Below the poverty line
- 7.4%
- Unemployed (of the labor force)
- 4.2%
- Adults 25+ with a bachelor's degree
- 45.4%
- Adjusted gross income per tax return, 2022
- $107,0233,850 returns; wages 66% 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 18078?
FHFA's house price index for 18078, built from repeat sales and appraisals of the same homes, rose 78% from 2015 to 2025 and rose 56% from 2020 to 2025, and moved +7.8% in 2025.
- Median home value (owners' estimate)
- $385,400
- Median gross rent
- $1,238
- Homes owned by their occupants
- 81.9%
- Housing units
- 2,822
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 18078?
155 business establishments had a location in this ZIP code in 2023, 14 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance22
- Retail trade20
- Administrative and support and waste management and remediation services20
- Other services (except public administration)17
- Construction14
- Professional, scientific, and technical services12
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 18078?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 18065 | Neffs | 577 | – | 2.0 mi |
| 18069 | Orefield | 8,515 | $118k | 3.2 mi |
| 18037 | Coplay | 7,472 | $84k | 3.9 mi |
| 18080 | Slatington | 11,226 | $75k | 4.2 mi |
| 18053 | Germansville | 2,344 | $83k | 5.5 mi |
| 18104 | Allentown | 48,683 | $95k | 5.6 mi |
| 18066 | New Tripoli | 6,102 | $109k | 6.3 mi |
| 18079 | Slatedale | 303 | $96k | 5.4 mi (near) |
| 18059 | Laurys Station | 744 | $168k | 5.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.