Zip lookup · PA

18109
Allentown, Pennsylvania.

Allentown, Lehigh County, PA · Allentown-Bethlehem-Easton, PA-NJ metro · population 18,446

What it costs per month · 18109 $1,424/mo

to buy the typical home at today's mortgage rate — +$877 (+160%) since Jan 2020.

What the home itself did
1 year
Up $10,227 +4%
$261,024$271,250 since Sep 2025
5 years
Up $84,840 +46%
$186,410$271,250 since Sep 2021

Monthly payment to buy the typical home

Home value × that month's 30-year mortgage rate, 20% down, principal and interest. This is the line households feel: prices and rates compound each other.

$500 $1,000 $1,500 $2,000 2002 2006 2010 2014 2018 2022 2026 18109 $1,424 United States $1,922
$500 $1,000 $1,500 $2,000 2002 2010 2018 2026
  • 18109$1,424
  • United States$1,922

At the last five years' pace, a typical home here doubles in price every 9 years.

Typical home values in zip 18109 rose 3.9% over the past year — faster than the nation's +1.2%.

Asking rents in zip 18109 rose 0.2% over the past year — slower than the nation's +2.7%.

Owning the typical home in zip 18109 runs $510/mo more than renting one — the widest that gap has been in this data.

That is $2,064 a month against $1,554 rent: a $1,424 mortgage payment, plus $350 property tax and $290 insurance & upkeep.

Owning vs renting — zip 18109

The owning line is the typical home's monthly payment at that month's rate, plus property tax and insurance & upkeep; the renting line is the typical asking rent; the grey line is the mortgage payment on its own. Same homes, same months, both ways of paying for a roof.

$1,250 $1,500 $1,750 $2,000 2024 2025 2026 Owning all in $2,064 Renting $1,554 Mortgage only $1,424
$1,250 $1,500 $1,750 $2,000 2024 2025 2026
  • Owning all in$2,064
  • Renting$1,554
  • Mortgage only$1,424

Property tax · $350/mo 1.55% of value a year — the ACS 2020-2024 median bill over the median home value for 2 counties

Insurance & upkeep · $290/mo insurance, maintenance and repairs together, from the BLS Consumer Expenditure Survey — the national figure for mortgaged homeowners, scaled to this market's home value. BLS publishes the three bundled and they cannot be split.

Both are priced off the same month's home value, so they rise with the market. Neither is a quote — a specific home's bill depends on its assessment, its age and its insurer.

This zip spans 2 counties: Lehigh County, PA 95% · Northampton County, PA 5%

Zillow also publishes an index for the city itself: Allentown, PA — measured over the city limits, which is a different area from this zip.

Asking rent $1,554 as of Sep 2026
+0.2%year on year
Typical home value $271,250 as of Sep 2026
+3.9%year on year

Asking rent — 18109

Against the Allentown-Bethlehem-Easton, PA-NJ metro and the national benchmark.

$1,400 $1,600 $1,800 2024 2025 2026 18109 $1,554 Allentown $1,841 United States $1,932
$1,400 $1,600 $1,800 2024 2025 2026
  • 18109$1,554
  • Allentown$1,841
  • United States$1,932

Typical home value — 18109

Mid-tier homes, smoothed and seasonally adjusted.

$150,000 $200,000 $250,000 $300,000 $350,000 2018 2020 2022 2024 2026 18109 $271,250 Allentown $363,366 United States $366,157
$150,000 $200,000 $250,000 $300,000 $350,000 2018 2022 2026
  • 18109$271,250
  • Allentown$363,366
  • United States$366,157

Within 20 miles

Showing 30 of 73 zips in range — sorting picks from all 73.

Miles sorted ascending, activate to sort descending Zip activate to sort by Zip City activate to sort by City Population activate to sort by Population Rent activate to sort by Rent Home value activate to sort by Home value
2.0 18032 Catasauqua 9,555 $1,775 $287,901
2.4 18018 Bethlehem 32,965 $1,732 $298,401
2.7 18102 Allentown 51,001 $1,517 $225,328
2.8 18101 Allentown 6,120 $1,600 $210,012
3.2 18017 Bethlehem 40,640 $2,077 $390,629
3.6 18052 Whitehall 29,451 $1,824 $338,831
4.9 18103 Allentown 48,746 $1,683 $313,587
5.0 18015 Bethlehem 34,852 $1,775 $292,088
5.9 18104 Allentown 48,683 $2,297 $399,078
6.0 18067 Northampton 19,590 $1,694 $353,231
6.4 18037 Coplay 7,472 — $358,444
6.4 18020 Bethlehem 21,204 $2,599 $434,365
6.7 18034 Center Valley 9,209 — $575,248
7.8 18059 Laurys Station 744 — $493,461
8.1 18055 Hellertown 12,117 $2,204 $377,612
8.7 18049 Emmaus 18,941 $1,898 $386,703
9.0 18014 Bath 12,097 $1,722 $397,966
9.2 18106 Allentown 6,226 $2,400 $445,223
9.2 18036 Coopersburg 15,581 $2,200 $505,352
9.2 18069 Orefield 8,515 $2,575 $522,204
9.5 18045 Easton 30,429 $2,178 $423,231
9.5 18035 Cherryville 39 — $461,779
9.8 18078 Schnecksville 7,857 — $522,370
10.0 18087 Trexlertown 590 — $357,559
10.5 18064 Nazareth 26,970 $1,724 $460,561
10.8 18088 Walnutport 8,488 — $352,523
11.2 18038 Danielsville 3,549 — $389,001
11.4 18042 Easton 45,532 $1,702 $272,805
11.5 18077 Riegelsville 2,203 — $531,821
11.7 18062 Macungie 27,110 $2,301 $452,218

Coordinates and population from SimpleMaps US Zips (Basic). Rent and home values from Zillow Research.