ZIP code 18020: Bethlehem, PA
18020 is a ZIP code in Bethlehem, Pennsylvania, mainly in Northampton County, part of the Allentown-Bethlehem-Easton, PA-NJ metro area. About 21,204 people live here.
- Population
- 21,204
- Median household income
- $126,166
- Typical home value
- $434,400+4.3% in 12 months
- Median rent
- $1,534gross, per month
- Median age
- 42.8
- Homeowners
- 85.8%of occupied homes
Shaded: ZIP code 18020's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 18020 details
| City | Bethlehem |
|---|---|
| State | Pennsylvania |
| County | Northampton County |
| Metro area | Allentown-Bethlehem-Easton, PA-NJ |
| Time zone | Eastern Time (UTC−5), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 13 sq mi, plus 0.2 sq mi of water |
| Population density | 1,629 people per sq mi |
| Bachelor's degree or higher | 42.7% of adults 25+ |
| Average commute | 25.9 minutes |
| Center coordinates | 40.67238, -75.32746 |
Median rent in 18020 by bedrooms
| Size | Median gross rent |
|---|---|
| Studio | $1,257/mo |
| 1 bedroom | $1,546/mo |
| 2 bedrooms | $1,454/mo |
| 3 bedrooms | $1,981/mo |
| 4 bedrooms | $1,468/mo |
Gross rent includes utilities paid by the tenant. ACS 2020–2024; sizes with too few rentals to estimate are left out.
ZIP codes near 18020
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 18045 | Easton, PA | 3.1 mi | 30,429 |
| 18017 | Bethlehem, PA | 3.3 mi | 40,640 |
| 18025 | Bethlehem, PA | 3.9 mi | — |
| 18018 | Bethlehem, PA | 4.7 mi | 32,965 |
| 18002 | Lehigh Valley, PA | 5.2 mi | — |
| 18042 | Easton, PA | 5.6 mi | 45,532 |
| 18043 | Easton, PA | 5.7 mi | — |
| 18044 | Easton, PA | 5.7 mi | — |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 18020?
A typical home in ZIP code 18020 is worth about $434,400 (Zillow Home Value Index). The median household here earns $126,166 a year. See what buying here would cost per month, with Pennsylvania average taxes and insurance filled in.
Monthly payment for a $434,400 homeWhat can a $126,166 income afford?Rental property numbers
About ZIP code 18020
What city is ZIP code 18020?
ZIP code 18020 is in Bethlehem, PA, in Northampton County.
What county is ZIP code 18020 in?
18020 is mainly in Northampton County, Pennsylvania.
What is the population of ZIP code 18020?
About 21,204 people live in ZIP code 18020, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 18020 in?
18020 is in Eastern Time (UTC−5). It observes daylight saving time.