Tool

ZIP Codes Within a Radius

Enter a ZIP code and a distance. The tool lists every residential ZIP code whose center (the Census Bureau's internal point of its area) lies within that many miles, nearest first. PO Box and single-organization codes have no area of their own, so they are not placed.

11 other ZIP codes within 10 miles of 21784

The 10-mile circle around 21784's center; residential ZIP codes centered inside it, shaded by median household income in national fifths (ACS 2020-2024); the others are outlined. <$54k$98k+no figureZIP codes centered outside the circle

Distance between internal points, in miles
ZIP	Town	People	Miles
21784	Sykesville, MD	39,258	0.0
21104	Marriottsville, MD	6,052	5.0
21723	Cooksville, MD	669	5.2
21797	Woodbine, MD	8,643	7.0
21794	West Friendship, MD	2,192	7.1
21048	Finksburg, MD	10,481	7.3
21136	Reisterstown, MD	32,088	7.4
21163	Woodstock, MD	7,539	8.0
21133	Randallstown, MD	31,398	8.8
21738	Glenwood, MD	3,696	8.8
21042	Ellicott City, MD	43,327	9.5
21771	Mount Airy, MD	33,031	9.9

Source: U.S. Census Bureau, 2023 Gazetteer internal points (2020 ZCTAs); GeoNames postal codes (CC BY 4.0) for a PO Box origin's town. Straight-line distance, not driving distance.