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Zip Code 21918 — Conowingo, MD

21918 is a ZIP Code associated with Conowingo, MD, located within Cecil. The postal region supports an estimated population of 4,169 residents across Data Pending housing units, with a population density of 91.6 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.683270, -76.166620)

Data Metric	Local Statistic
Postal / Zip Code	21918
Primary City	Conowingo
State / Province	MD
County	Cecil
Total Population	4,169
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	91.6 people/sq mi
Timezone	America/New_York

How 21918 Compares

Metric	ZIP 21918	Cecil County	MD State Average
Population	4,169	104,960	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	91.6 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21917	Colora	3.7 mi	2,233	N/A
Zip 21034	Darlington	3.8 mi	2,846	N/A
Zip 21904	Port Deposit	6.3 mi	6,233	N/A
Zip 21911	Rising Sun	6.8 mi	10,551	N/A
Zip 21160	Whiteford	7.7 mi	2,441	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 →