ZIP 27539 vs ZIP 27518

Source:

Apex, NC — Cary, NC

This side-by-side compares ZIP 27539 (Apex, NC) and ZIP 27518 (Cary, NC) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 27539 has a population of 18,692 at 229 people per square mile, while ZIP 27518 has 19,630 at 788 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 27539 reports a median household income of $145,947 against $123,488 in ZIP 27518, with per-capita income of $58,937 vs $69,623. The share of adults holding a bachelor's degree or higher is 64.0% in 27539 and 71.8% in 27518. Poverty rate reads 2.5% vs 5.5%, and unemployment 4.2% vs 3.0% — 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 $565,600 in 27539 versus $632,200 in 27518, with median rent of $1,885 and $1,681 per month respectively. Homeownership rate is 83.1% vs 66.1%. 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
27539
Apex, NC
27518
Cary, NC
Population 18,692 19,630
Median Household Income $145,947 $123,488
Per Capita Income $58,937 $69,623
Median Age 37.7 46.9
Bachelor's Degree or Higher 64.0% 71.8%
Poverty Rate 2.5% 5.5%
Unemployment Rate 4.2% 3.0%
Median Home Value $565,600 $632,200
Median Rent (monthly) $1,885 $1,681
Homeownership Rate 83.1% 66.1%
Population Density (per sq mi) 229 788

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

Full Profile
27539
Apex, NC
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27518
Cary, NC
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What are common questions about this comparison?

How do ZIP codes 27539 and 27518 compare?
ZIP 27539 (Apex, NC) has a population of 18,692 and a median household income of $145,947. ZIP 27518 (Cary, NC) has a population of 19,630 and a median household income of $123,488.
Which ZIP code has higher income, 27539 or 27518?
ZIP 27539 (Apex, NC) has a higher median household income of $145,947 compared to $123,488 for ZIP 27518.
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.