ZIP 21814 vs ZIP 21840

Source:

Bivalve, MD — Nanticoke, MD

This side-by-side compares ZIP 21814 (Bivalve, MD) and ZIP 21840 (Nanticoke, MD) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 21814 has a population of 380 at 40 people per square mile, while ZIP 21840 has 375 at 28 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 21814 reports a median household income of against in ZIP 21840, with per-capita income of $31,749 vs $64,382. The share of adults holding a bachelor's degree or higher is 0.0% in 21814 and 17.6% in 21840. Poverty rate reads 20.7% vs 0.0%, and unemployment 20.2% vs 19.8% — 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 in 21814 versus $9,999 in 21840, with median rent of and per month respectively. Homeownership rate is 100.0% vs 68.2%. 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
21814
Bivalve, MD
21840
Nanticoke, MD
Population 380 375
Median Household Income
Per Capita Income $31,749 $64,382
Median Age 62.9 41.9
Bachelor's Degree or Higher 0.0% 17.6%
Poverty Rate 20.7% 0.0%
Unemployment Rate 20.2% 19.8%
Median Home Value $9,999
Median Rent (monthly)
Homeownership Rate 100.0% 68.2%
Population Density (per sq mi) 40 28

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

Full Profile
21814
Bivalve, MD
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21840
Nanticoke, MD
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What are common questions about this comparison?

How do ZIP codes 21814 and 21840 compare?
ZIP 21814 (Bivalve, MD) has a population of 380 and a median household income of —. ZIP 21840 (Nanticoke, MD) has a population of 375 and a median household income of —.
Which ZIP code has higher income, 21814 or 21840?
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.