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ZIP Code · PA

ZIP 18104

Pop. 48,683·Lehigh County·28th most expensive ZIP in Pennsylvania
Median rent (all units)
$2,237/mo
Year-over-Year
+7.9%
Month-over-Month
+0.6%
vs US Median
+$272
Rising (Monthly)
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Most AffordableMost Expensive
ZIP 18104 · $2,237
More expensive than 71% of US ZIP codes · National median $1,965/mo
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Medians by bedroom

Rent by unit size

Studio
$1,380
1 BR
$1,640
2 BR
$2,000
3 BR
$2,550
4 BR+
$2,690
Research median
$2,000/mo

Bedroom estimates are gross rents that include essential utilities (electricity, water, gas, sewer, trash).

Rent trends

12-month history

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Last updated: July 20, 2026

Annual cost
$26,844/yr
At $2,237/mo median
Location
StatePA
CountyLehigh County
Rent Market Meter
Strong Landlord's Market
Renter's MarketBalancedLandlord's Market
Rents are up 7.9% year-over-year. Expect competition, and move quickly to lock in terms.
Based on rent-price momentum (+7.9% YoY, +0.6% MoM), not inventory.
Demographics

Who lives here

ZIP 18104 (Allentown, PA) is majority owner-occupied, has a large retiree population, has a median income above the national average, 46.1% of residents hold a bachelor's degree or higher.

Population
48,683
Median income
$94,601
Median age
40.6
Renters
29%
Age distribution
19.3%
23.6%
25.1%
20.5%
Under 1819.3%
18–3423.6%
35–5425.1%
55–6411.6%
65+20.5%
Gender
47.5%
52.5%
Male47.5%
Female52.5%
Race & ethnicity
68.2%
17.1%
White68.2%
Black7.1%
Hispanic17.1%
Asian7%
Other0.6%
Education (25+)
27.4%
21%
46.1%
No HS diploma5.6%
HS diploma27.4%
Some college21%
Bachelor's+46.1%
Housing tenure
71%
29%
Owner71%
Renter29%

Source: U.S. Census Bureau · ACS 2024 5-Year Estimates

2021 vs 2026

How ZIP 18104 in Allentown, PA has changed in 5 years

Rent
$1,666 → $2,237
up 34.3%
Income
$76,972 → $94,601
up 22.9%
Population
45,959 → 48,683
up 5.9%
Renter share
29.8% → 29%
-0.8 pts
Bachelor's+
43.5% → 46.1%
+2.6 pts
Median age
38.7 → 40.6
+1.9 yrs

Rent in ZIP 18104 in Allentown, PA has increased 34.3% since 2021, going from about $1,666 per month to roughly $2,237 today. Local incomes tracked alongside that move, going from a median of $76,972 in 2021 to $94,601 more recently. Rent outpaced income growth by roughly 11.4 percentage points, which means renters are spending a larger slice of each paycheck on housing than they did in 2021. Headcount in the area went from 45,959 to 48,683 between 2021 and 2024, a 5.9% change. Educational attainment has shifted as well, with the share of adults holding a bachelor's degree or higher climbed from 43.5% to 46.1%. These shifts give renters and would-be renters a longer baseline for sizing up today's listings against the ZIP 18104 in Allentown, PA market of 2021.

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Local insights

Tips for renters in ZIP 18104

About renting in ZIP 18104

Last updated: July 20, 2026

ZIP code 18104 covers Allentown, PA. The median rent here is $2,237/mo as of July 2026. A 1-bedroom rents for a median of $1,640/mo. A 2-bedroom rents for a median of $2,000/mo.

At 28% of local median household income ($94,601/yr), ZIP 18104 ranks as affordable compared to the national benchmark of 30%. Rents have increased 7.9% over the past year.

FAQ

Frequently asked questions

How much is rent in ZIP code 18104?

As of July 20, 2026, the median monthly rent in ZIP 18104 (Allentown, PA) is $2,237. This is based on aggregated data from public sources and community submissions.

How does ZIP 18104 rent compare to the US average?

ZIP 18104's median rent of $2,237/mo is $272 (14%) above the US national median of $1,965/mo.

How does ZIP 18104 compare to other ZIPs in Pennsylvania?

ZIP 18104 is one of the pricier ZIP codes in Pennsylvania, ranking #28 out of 270 ZIPs tracked at $2,237/mo.

How much income do you need to rent in ZIP 18104?

To keep rent at or below 30% of gross income, you would need to earn at least $89,000/year (~$43/hour full-time) to afford the median rent of $2,237/mo in ZIP 18104. The local median household income is $94,601/yr, meaning the typical household meets that threshold.

Is rent going up or down in ZIP 18104?

Rent in ZIP 18104 has increased 7.9% over the past year as of July 20, 2026, putting upward pressure on renter budgets.

Is ZIP 18104 an affordable place to rent?

ZIP 18104 is considered affordable for renters. At $2,237/mo, rent takes approximately 28% of the local median household income ($94,601/yr). The standard benchmark is 30%. ZIP 18104 falls comfortably within that range.

What percentage of ZIP 18104 residents rent vs. own?

According to Census data, approximately 29% of ZIP 18104 households are renters, while 71% are owner-occupied. ZIP 18104 leans toward homeownership, which can mean a smaller rental inventory.

How does ZIP 18104 compare to the rest of Allentown?

ZIP 18104 is pricier than Allentown as a whole. At $2,237/mo, it's $505 above the Allentown citywide median of $1,732/mo.

When was rent data for ZIP 18104 last updated?

Rent data for ZIP 18104 reflects July 20, 2026. RentDataNow refreshes all data monthly using public and private datasets.
Income Affordability
28%
AFFORDABLE

At $2,237/mo, rent takes ~28% of ZIP 18104's median household income ($94,601/yr). The standard benchmark is 30%.

ZIP 18104 28%Benchmark 30%
State income tax3.07%
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Schools nearby

Public schools near ZIP 18104 (Allentown, PA)

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