The story of this market
The typical home in ZIP 21057 sells for about $819,000, or $205 per square foot.
Prices are down 14.18% from a year ago, which gives buyers more room to negotiate. Homes take about 65 days to sell, which is slow. HUD's fair market rent for a two-bedroom is $2,200 a month.
ZIP 21057 — Glen Arm
The 21057 housing market remains stable with high median home values and low inventory levels. While year-over-year price metrics show a slight decline, this is largely attributed to a shift in the mix of homes sold rather than a broad market correction. Demand remains supported by the area's affluent demographic and proximity to major employment hubs.
This ZIP is best suited for family buyers and professionals seeking a suburban, semi-rural lifestyle with larger lot sizes and higher household incomes compared to the county average.
Median prices moved down 14.2% year over year.
Homes spend a median of 65 days on market with 2.5 months of supply — a fast-moving market.
4% 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 3.2% · poverty 2.5% — 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 5.0%/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 4.0%/yr trend — a deterministic estimate, not a published forecast or guarantee.
versus the prior ACS vintage
ZCTA 21057, Baltimore County MD
The area is served by Baltimore County Public Schools, with local schools generally maintaining strong performance ratings relative to the state average.
The area is primarily residential with limited large-scale commercial development, relying on proximity to the broader Baltimore County employment corridor.
Composed from the ARED governance burden registry — tier-native tax structure (state + county + city + special districts), never averaged. State (Maryland) — Maryland Real Property Assessment and Taxation: Property is assessed at its phased-in use value. The tax is calculated by multiplying the assessed value by the applicable state and local tax rates.
Residents primarily commute by car toward the Baltimore metropolitan employment core, with typical drive times ranging from 25 to 40 minutes depending on traffic.
The area features access to rural landscapes, local parks, and proximity to Loch Raven Reservoir for outdoor activities.
The rental market is characterized by low vacancy pressure and a mix of single-family home rentals, with limited multi-family inventory.
The local economy is driven by professional services, healthcare, and education sectors within the broader Baltimore County region.
Parcels are subject to Baltimore County property tax and school district levies.
Data retrieved from US Census Bureau ZCTA profiles.
No public schools report a street address in this area. Source: NCES EDGE public school locations 2023-24.
- 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 ranked by popularity within the radius shown.
Provides extensive trails, fishing, and boating opportunities for the region.
Key-figure check: median price diverges 21.4% from the nearest retained anchor (published ten-year series (2024)) — beyond the 12.5% tolerance; an automated validation case is open and the value publishes pending its verdict. Research outlier held out — this pass returned a median of $644,000 (21.4% off the retained reading), contradicting every independent anchor; the prior reading stands pending corroboration.