Home > MD > Allegany County > Flintstone > Zip 21530

Zip Code 21530 — Flintstone, MD

21530 is a ZIP Code associated with Flintstone, MD, located within Allegany. The postal region supports an estimated population of 1,404 residents across Data Pending housing units, with a population density of 8.9 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.688780, -78.541380)

Data Metric	Local Statistic
Postal / Zip Code	21530
Primary City	Flintstone
State / Province	MD
County	Allegany
Total Population	1,404
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	8.9 people/sq mi
Timezone	America/New_York

How 21530 Compares

Metric	ZIP 21530	Allegany County	MD State Average
Population	1,404	66,188	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	8.9 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21555	Oldtown	7.0 mi	1,470	N/A
Zip 21766	Little Orleans	7.9 mi	854	N/A
Zip 21502	Cumberland	11.9 mi	41,015	N/A
Zip 21560	Spring Gap	12.3 mi	9	N/A
Zip 21529	Ellerslie	12.6 mi	514	N/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 →