ZIP code
21688
Ridgely, MD
21688 is a decommissioned unique in Ridgely. Census figures are unavailable.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
No matching Census ZCTA — demographics unavailable. Population, income, and home value are not published for this unique.
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 21688. Methodology
About ZIP code 21688
More enterprise fields
Commercial ZIP directory · not ACS
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 21688. Methodology
People in 21688
Census fields are empty for this ZIP.
Income and housing in 21688
ACS does not publish income or housing figures for this ZIP.
Places covering 21688
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
No place overlap rows for this ZIP.
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
No county overlap rows for this ZIP.
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Population history for 21688
No history rows for this ZIP.
No ACS or IRS population history is published for this ZIP.
ZIP codes near 21688
12 nearest ZIP centroids (any distance)
No other ZIP codes with coordinates to rank by distance.
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 21688, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 21688 FAQ
- What city is ZIP code 21688 in?
- 21688 is in Ridgely, MD.
- What county is 21688 in?
- 21688 is in Caroline County.
- What is the median household income in 21688?
- Median household income is not published for 21688.
- Which ZIP codes are near 21688?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 21688.