The story of this market
The typical home in ZIP 21139 sells for about $450,000, or $112 per square foot.
Homes take about 30 days to sell. HUD's fair market rent for a two-bedroom is $1,158 a month.
ZIP 21139 — Riderwood
The market in this ZIP is characterized by limited inventory and steady demand, particularly for well-priced single-family homes. Proximity to the Katy ISD and major employment corridors continues to drive interest from family buyers. Most figures are based on recent listing data for the specific ZIP code.
This ZIP is well-suited for family buyers and commuters seeking access to highly-rated school districts and proximity to major employment centers in the Houston metro area.
Median prices moved sideways 0.0% year over year.
Homes spend a median of 30 days on market with 1.0 months of supply — a fast-moving market.
0% of listings have cut prices · homes sell at 100% of asking — demand is running ahead of supply.
no recorded foreclosure-ledger notices (0.0 per 10,000 residents) · unemployment 4.0% · poverty 8.0% — a stable, low-distress profile.
versus the prior ACS vintage
net influx — more people moved in than out
ZCTA 77449, Harris County TX
Not determinable at the ZIP level.
The area is served by the Katy Independent School District, which is widely recognized for high academic standards and strong extracurricular programs.
The region is subject to flood risk and wind events common to the Gulf Coast; property insurance premiums are influenced by these environmental factors.
The area benefits from proximity to major employment centers in the Katy and Houston metro region, with ongoing residential and commercial development.
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.
Commuters typically rely on major highway corridors to access employment hubs in Katy and the broader Houston metropolitan area.
Residents have access to local parks, community sports facilities, and proximity to regional shopping and dining centers in Katy.
The rental market is characterized by steady demand from families and commuters, with limited vacancy pressure in the suburban Katy corridor.
The local economy is anchored by the broader Houston energy, healthcare, and logistics sectors, with significant retail and service industry presence in Katy.
Transportation is primarily automobile-dependent, utilizing major regional highways for access to the Houston employment core.
Ongoing residential expansion and mixed-use development projects are active throughout the Katy area.
The Harris Central Appraisal District manages property assessments for the county.
Parcels are subject to various special districts including MUDs for utility services and the Katy Independent School District.
Property insurance markets are sensitive to regional weather risks, including flood and wind exposure.
Data retrieved from Census Bureau ZCTA-level tables.
No public schools report a street address in this area. Source: NCES EDGE public school locations 2023-24.
- Dave & Buster's Hanover - Arundel417.9 mi
- K1 Speed Jessup4.519.7 mi
- Dave & Buster's4.29.8 mi
- Sky Zone Trampoline Park4.119 mi
- Urban Air Trampoline and Adventure Park4.317.9 mi
- CFG Bank Arena4.18.6 mi
- M&T Bank Stadium4.79.2 mi
- Merriweather Post Pavilion4.518.2 mi
- Camden Yards4.88.8 mi
- Oriole Park at Camden Yards4.78.9 mi
- National Aquarium4.68.9 mi
- Oriole Park at Camden Yards4.78.9 mi
- The Maryland Zoo in Baltimore4.46.1 mi
- Fort McHenry National Monument and Historic Shrine4.810.7 mi
- The Walters Art Museum4.88 mi
- National Aquarium4.68.9 mi
- Fort McHenry National Monument and Historic Shrine4.810.7 mi
- Baltimore Museum of Art4.86 mi
- The Walters Art Museum4.88 mi
- Port Discovery Children's Museum4.58.7 mi
- Fort McHenry National Monument and Historic Shrine4.810.7 mi
- Patapsco Valley State Park - Hollofield Area4.611 mi
- Sherwood Gardens4.85 mi
- Canton Waterfront Park4.610 mi
- Patterson Park4.69.1 mi
- Topgolf Baltimore3.89.5 mi
- Pine Ridge Golf Course4.34.1 mi
- Diamond Ridge Golf Course4.39 mi
- Fox Hollow Golf Course4.33.9 mi
- The Woodlands Golf Course4.49 mi
- Towson Town Center4.42.5 mi
- White Marsh Mall4.39.8 mi
- H Mart Ellicott City4.512.8 mi
- Mondawmin Mall3.96.5 mi
- Lexington Market3.98.4 mi
- Baltimore/Washington International Thurgood Marshall Airport4.316.2 mi
- The Club BWI3.916 mi
Theme parks, venues, golf, airports, museums, water and shopping across the area ranked by popularity within the radius shown.
Major regional shopping and entertainment destination.
Key-figure check: median price diverges 64.4% 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 $160,000 (64.4% off the retained reading), contradicting every independent anchor; the prior reading stands pending corroboration.