ZIP 21648 vs ZIP 21677

Source:

Madison, MD — Woolford, MD

This side-by-side compares ZIP 21648 (Madison, MD) and ZIP 21677 (Woolford, MD) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 21648 has a population of 255 at 6 people per square mile, while ZIP 21677 has 440 at 18 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 21648 reports a median household income of against in ZIP 21677, with per-capita income of $42,655 vs $42,343. The share of adults holding a bachelor's degree or higher is 13.0% in 21648 and 21.6% in 21677. Poverty rate reads 24.4% vs 38.7%, and unemployment 0.0% vs 6.9% — 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 $195,000 in 21648 versus $328,600 in 21677, with median rent of and per month respectively. Homeownership rate is 91.4% vs 70.3%. 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
21648
Madison, MD
21677
Woolford, MD
Population 255 440
Median Household Income
Per Capita Income $42,655 $42,343
Median Age 61.4 48.6
Bachelor's Degree or Higher 13.0% 21.6%
Poverty Rate 24.4% 38.7%
Unemployment Rate 0.0% 6.9%
Median Home Value $195,000 $328,600
Median Rent (monthly)
Homeownership Rate 91.4% 70.3%
Population Density (per sq mi) 6 18

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

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21648
Madison, MD
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21677
Woolford, MD
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What are common questions about this comparison?

How do ZIP codes 21648 and 21677 compare?
ZIP 21648 (Madison, MD) has a population of 255 and a median household income of —. ZIP 21677 (Woolford, MD) has a population of 440 and a median household income of —.
Which ZIP code has higher income, 21648 or 21677?
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.