ZIP 61327 vs ZIP 61340

Source:

Hennepin, IL — Mark, IL

This side-by-side compares ZIP 61327 (Hennepin, IL) and ZIP 61340 (Mark, IL) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 61327 has a population of 1,235 at 14 people per square mile, while ZIP 61340 has 292 at 221 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 61327 reports a median household income of $89,306 against $78,750 in ZIP 61340, with per-capita income of $43,578 vs $38,583. The share of adults holding a bachelor's degree or higher is 18.3% in 61327 and 21.0% in 61340. Poverty rate reads 5.9% vs 10.3%, and unemployment 3.8% vs 2.6% — 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 $211,300 in 61327 versus $160,100 in 61340, with median rent of $849 and $938 per month respectively. Homeownership rate is 83.6% vs 73.5%. 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
61327
Hennepin, IL
61340
Mark, IL
Population 1,235 292
Median Household Income $89,306 $78,750
Per Capita Income $43,578 $38,583
Median Age 46.9 44.4
Bachelor's Degree or Higher 18.3% 21.0%
Poverty Rate 5.9% 10.3%
Unemployment Rate 3.8% 2.6%
Median Home Value $211,300 $160,100
Median Rent (monthly) $849 $938
Homeownership Rate 83.6% 73.5%
Population Density (per sq mi) 14 221

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

Full Profile
61327
Hennepin, IL
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61340
Mark, IL
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What are common questions about this comparison?

How do ZIP codes 61327 and 61340 compare?
ZIP 61327 (Hennepin, IL) has a population of 1,235 and a median household income of $89,306. ZIP 61340 (Mark, IL) has a population of 292 and a median household income of $78,750.
Which ZIP code has higher income, 61327 or 61340?
ZIP 61327 (Hennepin, IL) has a higher median household income of $89,306 compared to $78,750 for ZIP 61340.
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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.