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Zip Code 21047 — Fallston, MD

21047 is a ZIP Code associated with Fallston, MD, located within Harford. The postal region supports an estimated population of 13,852 residents across Data Pending housing units, with a population density of 237.2 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.528180, -76.437810)

Data Metric	Local Statistic
Postal / Zip Code	21047
Primary City	Fallston
State / Province	MD
County	Harford
Total Population	13,852
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	237.2 people/sq mi
Timezone	America/New_York

How 21047 Compares

Metric	ZIP 21047	Harford County	MD State Average
Population	13,852	262,768	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	237.2 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21013	Baldwin	3.1 mi	5,610	N/A
Zip 21082	Hydes	3.5 mi	626	N/A
Zip 21051	Fork	4.0 mi	172	N/A
Zip 21014	Bel Air	4.6 mi	38,707	N/A
Zip 21050	Forest Hill	4.7 mi	17,466	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 →