The story of this market
The typical home in ZIP 21057 sells for about $819,000, or $325 per square foot.
Prices are up +4.2% from a year ago, so sellers still have some momentum. Homes take about 45 days to sell. HUD's fair market rent for a two-bedroom is $1,746 a month.
ZIP 21057 — Glen Arm
The Glen Arm housing market remains characterized by low inventory and high price points, reflecting its status as a desirable, affluent suburban enclave. Demand remains steady among move-up buyers, though high interest rates have tempered the pace of sales compared to previous years.
This ZIP is best suited for family buyers and professionals seeking a quiet, semi-rural lifestyle with large lot sizes while remaining within commuting distance of Baltimore.
Median prices moved up 4.2% year over year.
Homes spend a median of 45 days on market with 4.0 months of supply — a fast-moving market.
15% of listings have cut prices · homes sell at 98.5% of asking — demand is running ahead of supply.
no recorded foreclosure-ledger notices (0.0 per 10,000 residents) · unemployment 1.7% · poverty 3.1% — a stable, low-distress profile.
Researched annual trajectory for this ZIP, from published historical series
Solid: researched ten-year history · dotted: 1 / 3 / 5-year projection extended from the historical 6.0%/yr trend — a deterministic estimate, not a published forecast or guarantee.
Median annual property tax paid on this ZIP's residential parcels
Solid: researched ten-year history · dotted: 1 / 3 / 5-year projection extended from the historical 6.0%/yr trend — a deterministic estimate, not a published forecast or guarantee.
versus the prior ACS vintage
in-migration and out-migration balanced
ZCTA 21057, Baltimore County MD
ACS 2024 5-year estimates. Aggregate published statistics for this ZIP — never individual records, and never an attribute of any individual property or resident.
Glen Arm is characterized as a peaceful and quiet community with safety metrics that rank above the regional average for Maryland.
The area is served by Baltimore County Public Schools, which generally maintain strong academic reputations in this suburban corridor.
The region is subject to standard mid-Atlantic weather risks, including occasional severe thunderstorms and winter weather, with flood risk primarily localized to specific stream valleys.
Economic momentum is driven by proximity to the Baltimore metropolitan employment core, with development primarily focused on high-end residential infill and estate-style housing.
Property taxes are levied by Baltimore County based on assessed value, with additional state-level property taxes and local school district funding requirements.
Residents primarily commute by car toward Baltimore City or the Towson employment hub via I-695 and local arterial roads; public transit options are limited.
The area features significant green space, including proximity to Loch Raven Reservoir for hiking and fishing, as well as local equestrian trails and community parks.
The rental market is limited in depth, consisting primarily of single-family home rentals with low vacancy pressure and stable demand.
The local economy is anchored by professional services, healthcare, and education sectors in the broader Baltimore County area.
Transportation is heavily reliant on private vehicle use, with access to I-695 and I-83 providing the primary corridors for regional travel.
Development is largely constrained by zoning for low-density residential use, with minimal large-scale commercial pipeline activity.
The Baltimore County Office of Budget and Finance manages property assessments, typically reassessing properties on a three-year cycle.
Parcels are subject to Baltimore County public school and library district taxes, with no significant MUD/PID presence.
Property insurance premiums are stable, reflecting the area's low-to-moderate risk profile for natural disasters.
Data retrieved from US Census Bureau ZCTA 21057 profiles.
Public schools whose reported address is in this area (NCES). Not attendance boundaries — schools that serve residents may sit outside it. Check the district's address locator for assignment.
- Dave & Buster's4.25.7 mi
- Round1 Bowling & Arcade - Towson3.85.5 mi
- Get Air Trampoline Park4.218 mi
- Urban Air Trampoline and Adventure Park3.88.9 mi
- Sky Zone Timonium4.36.1 mi
- CFG Bank Arena4.112.4 mi
- M&T Bank Stadium4.713.2 mi
- Camden Yards4.812.7 mi
- Oriole Park at Camden Yards4.712.8 mi
- The Baltimore Convention Center4.412.6 mi
- National Aquarium4.612.4 mi
- Oriole Park at Camden Yards4.712.8 mi
- The Maryland Zoo in Baltimore4.411.4 mi
- Gunpowder Falls State Park Hammerman Area4.510.8 mi
- The Walters Art Museum4.811.9 mi
- National Aquarium4.612.4 mi
- Fort McHenry National Monument and Historic Shrine4.813.3 mi
- Baltimore Museum of Art4.810.2 mi
- The Walters Art Museum4.811.9 mi
- Port Discovery Children's Museum4.512.1 mi
- Gunpowder Falls State Park Hammerman Area4.510.8 mi
- Ladew Topiary Gardens4.79.1 mi
- Sherwood Gardens4.89.1 mi
- Meadowood Regional Park4.78.6 mi
- Canton Waterfront Park4.612.3 mi
- Sparrows Point Country Club4.513.6 mi
- Bar Harbor RV Park and Marina4.414.5 mi
- Port Covington Marina4.713.6 mi
- The Island at Flying Point Marina4.113.6 mi
- Anchorage Marina4.512.2 mi
- Pine Ridge Golf Course4.33.6 mi
- Fox Hollow Golf Course4.35.6 mi
- Mountain Branch4.17.8 mi
- Eagle's Nest Country Club4.42.9 mi
- Mount Pleasant Golf Course4.26.8 mi
- Towson Town Center4.45.5 mi
- White Marsh Mall4.35.7 mi
- Mondawmin Mall3.911.8 mi
- Lexington Market3.912.4 mi
- Safeway4.112.2 mi
- Baltimore/Washington International Thurgood Marshall Airport4.320.5 mi
- The Club BWI3.920.3 mi
Theme parks, venues, golf, airports, museums, water and shopping across the area from Google Maps, ranked by popularity within the radius shown.
Extensive hiking, fishing, and nature trails serving the region.
Local community park with sports fields and recreational facilities.
Key-figure check: no independent anchor retained yet — first-researched cycles establish the anchor baseline this pass.