ZIP 18103 vs ZIP 18105

Source:

Allentown, PA — Allentown, PA

This side-by-side compares ZIP 18103 (Allentown, PA) and ZIP 18105 (Allentown, PA) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 18103 has a population of 45,336 at 994 people per square mile, while ZIP 18105 has 12 at 602 per square mile. That difference in population size and density alone reshapes how every other metric should be interpreted — a higher-income ZIP with 1,200 residents behaves very differently from one with 45,000.

On income and education, ZIP 18103 reports a median household income of $72,895 against in ZIP 18105, with per-capita income of $40,738 vs . The share of adults holding a bachelor's degree or higher is 27.6% in 18103 and in 18105. Poverty rate reads 10.3% vs , and unemployment 5.8% vs — these four fields alone drive most of the difference in the scorecard grades you will see for each ZIP.

Housing separates these two ZIPs further: median home value sits at $272,700 in 18103 versus in 18105, with median rent of $1,368 and per month respectively. Homeownership rate is 63.1% vs . When reading the comparison table below, focus on paired metrics rather than single winners — a ZIP with lower home values and lower income is not strictly "worse" if rent-to-income ratios and commute times land in the same zone. Every value is pulled from the exact same ACS table so the two columns are genuinely comparable.

Compare different ZIP codes:

vs
Metric
18103
Allentown, PA
18105
Allentown, PA
Population 45,336 12
Median Household Income $72,895
Per Capita Income $40,738
Median Age 39.1
Bachelor's Degree or Higher 27.6%
Poverty Rate 10.3%
Unemployment Rate 5.8%
Median Home Value $272,700
Median Rent (monthly) $1,368
Homeownership Rate 63.1%
Population Density (per sq mi) 994 602

Values highlighted in green indicate the better metric where applicable. Source: U.S. Census Bureau ACS 2023.

Full Profile
18103
Allentown, PA
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18105
Allentown, PA
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What are common questions about this comparison?

How do ZIP codes 18103 and 18105 compare?
ZIP 18103 (Allentown, PA) has a population of 45,336 and a median household income of $72,895. ZIP 18105 (Allentown, PA) has a population of 12 and a median household income of —.
Which ZIP code has higher income, 18103 or 18105?
Income data is not available for one or both of these ZIP codes.
How do I compare two ZIP codes on PlainZIP?
Visit plainzip.com/compare, enter two 5-digit U.S. ZIP codes, and click Compare. You can also navigate directly to /compare/XXXXX-vs-YYYYY to share a specific comparison.

All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.

Data sourced from official U.S. Census ACS and HUD-USPS ZIP crosswalk data. See our methodology for details. Retrieved and formatted by PlainZIP Editorial.