Residential delivery area · Pennsylvania
ZIP Code 18018: Bethlehem, PA
ZIP code 18018 is in Bethlehem, Pennsylvania, mostly in Lehigh County (66% of its land) with the rest in Northampton County (Census 2020 ZIP-county file). About 33,000 people live there (Census Bureau, ACS 2020-2024), the 3rd most populous of Bethlehem's 4 residential ZIP codes. Median household income is $75,417 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Bethlehem · 4 residential ZIPs
- County
- Lehigh County (66%); Northampton County (34%)
- Census places
- Bethlehem
- Neighborhoods
- Kaywin, Notre Dame Hills, Rosemont Terrace GeoNames
- Metro area
- Allentown-Bethlehem-Easton, PA-NJ
- House district
- PA-7 119th Congress
- State
- Pennsylvania
- Time zone
- Eastern
- Land area
- 5.2 sq mi · 6,374 people per sq mi
Where is ZIP code 18018?
18018 centers on 40.628°, -75.396° and covers 5.2 square miles of land plus 0.1 of water. It borders 3 ZIP codes: 18017, 18109, 18015.
The map draws ZIP code areas only. For the streets inside 18018, 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); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 18018 compare with the rest of Bethlehem?
| Measure | 18018 | In Bethlehem | In Lehigh County | In PA |
|---|---|---|---|---|
| People (ACS 2020-2024) | 32,965 | 3rd of 4 | 6th of 35 | 86th of 1,833 |
| Median household income | $75k | 3rd of 4 | 20th of 27 | 465th of 1,015 |
| Median home value | $251k | 4th of 4 | 25th of 28 | 385th of 1,069 |
Its median household income is higher than in 56% of U.S. residential ZIP codes, and it is denser than 96% 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 18018?
The 2020 Census counted 32,388 people in 18018; the ACS, which samples households over 2020-2024, estimates 32,965. Between the 2010 and 2020 censuses its population fell 0.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 32,965
- 2020 Census count
- 32,388−0.1% since 2010 (32,413)
- Households
- 14,119
- Median age
- 39.2
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 18018?
Of the 32,965 people the ACS estimates in 18018, 15.6% are under 18 and 18.6% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (66.0%), then Hispanic or Latino (21.2%).
- Under 1815.6%
- 18 to 6465.8%
- 65 and older18.6%
- White, not Hispanic66.0%
- Hispanic or Latino21.2%
- Black, not Hispanic6.9%
- Other or two or more4.5%
- Asian, not Hispanic1.4%
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 18018 earn?
Median household income is $75,417 (ACS 2020-2024), the 20th highest of the 27 ranked ZIP codes in Lehigh County. It is not measurably different from 2015-2019 ($69,515 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $75,417
- Income per person
- $48,627
- Below the poverty line
- 15.2%
- Unemployed (of the labor force)
- 5.5%
- Adults 25+ with a bachelor's degree
- 38.8%
- Adjusted gross income per tax return, 2022
- $67,97116,980 returns; wages 71% 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 18018?
FHFA's house price index for 18018, built from repeat sales and appraisals of the same homes, rose 100% from 2015 to 2025 and rose 61% from 2020 to 2025, and moved +5.7% in 2025.
- Median home value (owners' estimate)
- $250,900
- Median gross rent
- $1,364
- Homes owned by their occupants
- 53.2%
- Housing units
- 14,586
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 18018?
776 business establishments had a location in this ZIP code in 2023, 108 fewer than in 2018; the most are in other services (except public administration) (ZIP Code Business Patterns).
- Other services (except public administration)114
- Health care and social assistance103
- Professional, scientific, and technical services101
- Accommodation and food services92
- Retail trade85
- Finance and insurance69
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 18018?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 18017 | Bethlehem | 40,640 | $91k | 2.3 mi |
| 18109 | Allentown | 18,446 | $58k | 2.5 mi |
| 18015 | Bethlehem | 34,852 | $61k | 3.2 mi |
| 18101 | Allentown | 6,120 | $45k | 4.2 mi (near) |
| 18032 | Catasauqua | 9,555 | $81k | 4.3 mi (near) |
| 18102 | Allentown | 51,001 | $43k | 4.4 mi (near) |
| 18020 | Bethlehem | 21,204 | $126k | 4.7 mi (near) |
| 18055 | Hellertown | 12,117 | $90k | 5.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.