21156 ZIP Code: Living in Upper Falls, MD

Updated November 2026 · Data: U.S. Census Bureau, American Community Survey 2020–2024

ZIP code 21156 is in Baltimore County, Maryland, and covers Upper Falls. A small area in east Baltimore County near Gunpowder Falls State Park and Belair Road. About 204 people live in the 21156 ZIP code area.

21156 at a glance

Figures are Census estimates for ZIP Code Tabulation Area 21156, which closely follows the postal ZIP code. This area has few residents, so housing estimates are not shown because they would be unreliable.

Neighborhoods and communities in 21156

The 21156 ZIP code includes Upper Falls. ZIP code lines don’t always match neighborhood or school boundaries, so confirm the details for any specific address.

Commuting from 21156

Here is how far the center of the 21156 ZIP code is from major job centers and travel hubs. These are straight-line distances; drive times depend on route and traffic.

Living in Baltimore County: what to know

Baltimore County has no incorporated cities, so communities such as this one are governed by the county. Property taxes, schools, police and trash service all run through Baltimore County government.

Public schools in 21156 are run by Baltimore County Public Schools. Assignments go by street address, not ZIP code, so use the district’s school locator for a specific home. To compare schools, see the Maryland State Department of Education Report Card.

For taxes, commuting and lifestyle across the county, read our Baltimore County relocation guide. For parks and trails, see Baltimore County parks.

ZIP codes near 21156

• 21087 – Kingsville
• 21162 – White Marsh
• 21128 – Perry Hall
• 21051 – Fork
• 21082 – Hydes
• 21236 – Nottingham

21156 ZIP code: frequently asked questions

Sources: U.S. Census Bureau, American Community Survey 5-year estimates 2020–2024 (tables DP03, DP04, DP05) for ZCTA 21156; U.S. Census Bureau TIGERweb ZCTA boundaries. Distances are calculated from the ZCTA’s internal point.