ZIP 18109 · Allentown, Pennsylvania
2026 Edition · 8 cards · data as of Oct 30, 2026
Read it as a page
-
Population
18,446 people call ZIP 18109 home.
18,446
people.
Census ACS 5-year, 2020-2024. Sources: Census ACS 5-year
-
Rent
Median rent is up 44% since the 2010–2014 survey, before inflation.
$1,331
a month. Pennsylvania's median is $1,209.
Census ACS 5-year, 2020-2024 (latest), with earlier 5-year windows. Sources: Census ACS 5-year
-
Room to build
The median rent sits inside what local wages can carry.
$1,131–$1,696
is the monthly rent range local workforce wages support.
- $1,331 median
Supportable rent computed by the Almanac from 2023 source wage data. Median rent: Census ACS 5-year, 2020-2024. Sources: Computed by the Almanac, Census ACS 5-year
-
Building
Most of the housing here is older than 2000.
- 83% of all homes were built before 2000
Census ACS 5-year, 2020-2024. Sources: Census ACS 5-year
-
Units needed
Closing the gap would add 0.5–2.4% to the 7,519 homes here.
37–179
is the estimated number of missing housing units, from the lowest to the highest of three estimates.
Range computed by the Almanac from 2023 jobs and household data, using three demand models: 1% of jobs located here, 1% of renter households, and a rate by town size applied to renters. The low end is the lowest of the three and the high end the highest. It is an estimate, not a count. Sources: Computed by the Almanac
-
Home value
A median home costs 22% less than Pennsylvania's.
$198,800
median home value in ZIP 18109.
- $198,800 ZIP 18109
- $254,500 Pennsylvania
- $332,700 U.S.
Census ACS 5-year, 2020-2024. Sources: Census ACS 5-year