Katy comes up with almost every buyer who wants more house, a newer neighborhood or a well known school district on the west side of the Houston area. Whether it's a good place to live depends on what you mean by "Katy," how far you're willing to drive, and how carefully you check taxes and flood history on the exact property. This guide covers how the area is laid out, what the numbers say about home values and income, the tax picture, the commute, flooding and what to check before you make an offer. Everything below was checked on October 24, 2026.
TL;DR
- "Katy" means two things: the City of Katy, a small city of about 28,000 people that sits where Harris, Fort Bend and Waller counties meet, and a much larger area with Katy mailing addresses, much of it unincorporated.
- Census estimates for the City of Katy put the median owner-occupied home value at $401,700 and median household income at $114,912 (2020-2024 American Community Survey).
- Katy ISD's total tax rate for 2026-27 is $1.1171 per $100 of value, unchanged for the third year in a row. The City of Katy's 2026 rate is $0.42 per $100, but many Katy addresses pay a municipal utility district (MUD) tax instead of a city tax.
- The commute to central Houston is long. The Census estimate of mean travel time to work for City of Katy residents is 31.3 minutes, and METRO runs weekday Park & Ride buses downtown from the Grand Parkway and Kingsland lots.
- Some neighborhoods near Barker and Addicks reservoirs can flood from water held behind the dams, as happened during Harvey in 2017. Check every address for its flood zone and flood history.
Two different things called Katy
The City of Katy describes itself as the hub of three counties, Harris, Waller and Fort Bend, about 30 miles west of Houston. Its city history page says the community started as Cane Island, named for Cane Island Creek, with the first settlement in 1872. The town site was platted in 1895, supposedly named for the M-K-T Railroad that runs through it. Rice farming was the main industry, Katy ISD was formed in 1918, a gas field was discovered in 1934, and the city incorporated in 1945. The old railroad depot and a red caboose still sit downtown as a museum.
The city itself is small. The U.S. Census Bureau's QuickFacts for Katy city lists 14,102 residents in 2010, 21,894 in the 2020 Census and an estimated 28,373 as of July 1, 2025, a 29.7 percent increase since 2020, on about 14.5 square miles of land.
Most people who say they live "in Katy," though, live outside the city limits, in master-planned communities and subdivisions along I-10, the Grand Parkway and FM 1093 that carry Katy mailing addresses and are zoned to Katy ISD. Those homes can be in unincorporated Harris County or Fort Bend County, and the difference matters for taxes, utilities and who handles drainage. Before you compare two houses, look each one up on the appraisal district for its county to see exactly which taxing units it's in.
What homes cost and who lives there
The QuickFacts figures for the City of Katy come from the Census Bureau's 2020-2024 American Community Survey five-year estimates. They're averages over several years and what owners report, not recent sale prices, but they give a useful picture:
- Median value of owner-occupied homes: $401,700
- Median household income: $114,912 (in 2024 dollars)
- Owner-occupied rate: 80.7 percent
- Median gross rent: $1,602
- Median monthly owner costs with a mortgage: $2,953
- Persons per household: 3.15, with 28.4 percent of residents under 18
Those numbers describe a family-heavy, mostly owner-occupied city. The wider Katy area covers everything from older homes near downtown to new construction farther out, and prices vary a lot by community and age of home. For what is actually for sale right now, browse current listings and ask for recent sold comparables on the streets you're considering. If you're still weighing areas, our guide to choosing a Houston neighborhood for families walks through the trade-offs.
Property taxes in Katy
Texas has no state income tax, so local property taxes do most of the work, and Katy is no exception. A typical home pays a school district rate, a county rate and either a city rate, a MUD rate or both.
Katy ISD
Katy ISD's Board of Trustees kept the district's total tax rate at $1.1171 per $100 of value on September 21, 2026, the third year in a row without a change. That's $0.7271 for maintenance and operations and $0.3900 for debt service, also shown on the district's tax rate page. The district says it runs more than 100 schools and support facilities and that its taxable property value grew 1.5 percent this year.
For school taxes, a homestead gets the state's $140,000 exemption. The Harris Central Appraisal District's jurisdiction listing for a Katy ISD property shows that $140,000 amount for Katy ISD, along with the other units on that account, including a Harris County MUD and an emergency services district.
City of Katy
If the house is inside the city limits, the City of Katy's adopted 2026 tax rate is $0.42 per $100, down from $0.425 in 2025. The city offers a 20 percent homestead exemption (at least $5,000) and an additional $100,000 exemption for owners 65 and older or disabled. You apply through the appraisal district of the county the house is in, and city taxes are billed with your county tax bill.
MUDs and the "no city tax" trap
Many homes outside the city limits pay no city tax but do pay a municipal utility district tax, which funds water, sewer and drainage, often for a newer subdivision's infrastructure. MUD rates vary by district and can be a large share of the total bill, so a lower list price in one community can be offset by a higher tax rate. Our guide to MUD taxes in Houston explains how to find a district's rate and read the notice sellers must give you. For the bigger picture on exemptions and protests, see how property taxes work in Houston.
Commute and getting around
Katy's biggest trade-off is distance. Census estimates put the mean travel time to work for City of Katy residents at 31.3 minutes, and people working downtown, in the Texas Medical Center or on the east side will usually have longer trips than that. I-10 (the Katy Freeway) is the main route east, with the Grand Parkway (State Highway 99) running north and south through the area.
METRO's Route 222 Grand Parkway Park & Ride leaves from the lot at I-10 and State Highway 99 and runs to downtown Houston on weekdays, with no weekend service. The regular one-way fare listed on the route page is $4.50, and parking at METRO Park & Ride lots is free. The Route 221 Kingsland Park & Ride also serves downtown. If you work in the Energy Corridor or west Houston, the drive is much shorter, which is one reason the area is popular with people who work along I-10.
Before you buy, drive the commute at the hour you'd actually make it, on a weekday, from the specific house.
Flooding: the reservoirs and local drainage
Katy's flat prairie is part of why the area flooded historically, and two big federal flood control reservoirs, Addicks and Barker, sit just east of much of it. In a December 2019 post-trial decision, the U.S. Court of Federal Claims described how, during Harvey in August 2017, the dams held back storm water and properties inside the reservoirs, upstream of the dams, flooded from the impounded water. The court found the government liable for a taking of a flowage easement.
The same decision notes that the Corps told Fort Bend County in the early 1990s that Barker Dam could hold 8.7 more feet of water than the government had bought land for, which could flood roughly 4,769 acres outside the Corps' property, and that Fort Bend County began requiring warning language on subdivision plats. One plat cited in the case says the subdivision is "subject to extended controlled inundation under the management of the U.S. Army Corps of Engineers." If you're looking near the reservoirs, read the subdivision plat and ask the title company about any such notes.
Separately, the Harris County Flood Control District has studied how runoff from upper Cypress Creek can overflow into the Addicks and Barker watersheds in heavy storms, and published a Cypress Creek Overflow Management Plan. Its supplemental development criteria estimate that the overflow starts somewhere between a 5-year and a 10-year storm.
None of this means every Katy home floods. It means the risk is address by address. For homes in Harris County, check MAAPnext; for Fort Bend and Waller county homes, use the FEMA Flood Map Service Center. Ask for the seller's disclosure, which covers flood history and reservoir location, and get a flood insurance quote before your option period ends. Our guides to checking a Houston flood zone by address and flood insurance costs cover the details.
What to check on a specific Katy house
- Taxing units. Look up the property on the right county appraisal district and list every unit: Katy ISD, the county, the city or a MUD, and any emergency services district.
- Exemptions. Confirm the seller's exemptions. Your own homestead exemption starts only after you buy and apply, so budget on the full rate if the seller had senior or disability exemptions.
- Flood history and plats. Check the flood zone, the seller's disclosure, the subdivision plat and whether the house is near Barker or Addicks reservoir.
- HOA rules and fees. Master-planned communities usually have an HOA, and some have more than one. Read the restrictions and the resale certificate.
- School zoning. Katy ISD is opening new schools and adjusting boundaries, so confirm the zoned campuses for the exact address with the district rather than relying on the listing.
- The commute. Drive it at rush hour from the actual house.
FAQ
Is Katy part of Houston?
No. The City of Katy is its own city, and much of the surrounding Katy area is unincorporated Harris County or Fort Bend County. A Katy mailing address doesn't tell you which one a house is in.
What county is Katy in?
The City of Katy sits where Harris, Fort Bend and Waller counties meet. The county matters because it decides your appraisal district, county tax rate and flood map source.
What is the property tax rate in Katy?
It depends on the address. Katy ISD's 2026-27 rate is $1.1171 per $100 and the City of Katy's 2026 rate is $0.42 per $100. Add the county rate and any MUD or emergency services district rate shown on the appraisal district account.
Is Katy a good place to raise a family?
Many families choose it for newer homes, larger lots and Katy ISD. Census estimates show 28.4 percent of City of Katy residents are under 18. Whether it fits depends on your budget, commute and the specific school zoning.
How long is the commute from Katy to downtown Houston?
The city sits about 30 miles west of Houston, and the Census estimate of mean travel time to work for city residents is 31.3 minutes. Downtown commutes are usually longer at rush hour. METRO's weekday Park & Ride buses from the Grand Parkway and Kingsland lots are an alternative.
Does Katy flood?
Some parts can. Homes inside or near the Addicks and Barker reservoir pools flooded from impounded water during Harvey, and local drainage varies by subdivision. Check each address's flood zone, disclosure and plat before you buy.
Are homes in Katy cheaper than in Houston?
Not always. The 2020-2024 Census estimate of median owner-occupied home value in the City of Katy is $401,700, and many new homes in the area sell well above that. Compare total monthly cost, including taxes, MUD, HOA and insurance, not just the price.
One last thing
Katy can be a great fit if you want space, newer construction and a well known school district, and you can live with the drive. The houses that work out best are the ones where the buyer checked the tax units, flood history and commute before the option period ended. If you'd like help comparing Katy communities or other west side neighborhoods, get in touch with Vital Realty or start with our Houston area guides.