Home > MD > St. Mary's County > Chaptico > Zip 20621

Zip Code 20621 — Chaptico, MD

20621 is a ZIP Code associated with Chaptico, MD, located within St. Mary's. The postal region supports an estimated population of 958 residents across Data Pending housing units, with a population density of 26.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.330620, -76.794380)

Data MetricLocal Statistic
Postal / Zip Code20621
Primary CityChaptico
State / ProvinceMD
CountySt. Mary's
Total Population958
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density26.7 people/sq mi
TimezoneAmerica/New_York

How 20621 Compares

MetricZIP 20621St. Mary's CountyMD State Average
Population958113,4806,205,597
Median IncomeData PendingN/AN/A
Population Density26.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 20624Clements3.3 mi796N/A
Zip 20618Bushwood3.4 mi1,705N/A
Zip 20609Avenue4.8 mi714N/A
Zip 20661Mount Victoria5.3 miN/AN/A
Zip 20660Morganza5.4 mi14N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →