Moving to Katy, TX: What to Know Before You Go

Start with the thing almost nobody tells relocating buyers, because it explains half of the confusion that follows.

Most homes with a Katy address are not in the City of Katy.

Katy is a place, and also a much smaller city

The actual City of Katy had an estimated 28,373 residents as of July 1, 2025. Meanwhile the broader Katy area, the thing everyone means when they say they are moving to Katy, holds hundreds of thousands of people.

The difference is not trivia. Most Katy addresses sit in unincorporated Harris, Fort Bend or Waller county, which means different rules, different services, and a different tax bill than an address inside the city limits. Katy sits at the tripoint of those three counties, roughly 29 miles west of downtown Houston on Interstate 10.

So when you research anything about Katy, from floodplain rules to permits to tax rates, the honest first question is always which county and whether the address is inside the city. The answers change.

The numbers, from the Census

For the City of Katy, the Census Bureau’s most recent figures covering 2020 to 2024 show:

Median household income: $114,912, in 2024 dollars.

Median value of owner occupied homes: $401,700.

Homeownership rate: 80.7 percent.

Bachelor’s degree or higher: 48.8 percent of residents 25 and older.

That is a heavily owner occupied, high income, well educated suburb, and the housing stock reflects it.

Growth is steady rather than explosive. Katy added 4,982 residents between 2019 and 2024, about 24.66 percent. For comparison, neighboring Fulshear grew almost 252 percent over the same period. Katy is expanding, not erupting.

One more stat that says something real: Katy’s median age actually fell 2.4 years over that span, to 37.6. The largest single age group is 45 to 54. Young families keep arriving.

The tax situation, explained before it surprises you

Texas has no state income tax. If you are coming from California, New York or Illinois, that is probably part of the appeal, and it is genuine.

Here is the other half, and it catches almost every out of state buyer off guard. Texas funds itself through property tax instead, and in the Katy area a lot of homes carry an extra layer on top called a Municipal Utility District, or MUD.

A MUD is a taxing district that financed the water, sewer, drainage and often the amenities in your neighborhood. You pay it down over years through your tax bill, and it is stacked on top of county, school and other rates.

Combined rates in the Katy new construction communities commonly land somewhere around 2.8 to 3.6 percent of assessed value depending on the section. On a $400,000 home the gap between the low end and the high end of that range is well over $200 a month.

And it varies by section, not just by community. One large Katy community publishes MUD rates of $0.65, $0.88, $1.50 and $1.50 per $100 of valuation depending on which part of it you are in. Same community, same amenities, more than double the rate.

If you take one thing from this article: get the specific MUD rate for the specific homesite before you fall in love with a floor plan, and compare monthly payments rather than sticker prices.

Schools, the reason many people come

Katy ISD is the main draw and it earns it. In Niche’s 2026 rankings it holds an overall A plus, ranks 10 of 876 districts in Texas, 181 of 10,394 nationally, and number one in the Houston area, taking the top regional spot in all five categories. Its community rating is 4.18 out of 5 across 793 reviews.

Two caveats worth knowing before you house hunt.

First, a Katy mailing address does not guarantee Katy ISD. Some nearby addresses feed other districts, and boundaries shift as new schools open in a growing area.

Second, because the district is strong nearly everywhere, school quality alone will not narrow your search much within Katy. You will end up choosing on commute, tax rate and community feel instead.

The commute, realistically

Katy sits on Interstate 10, which is the main artery into Houston and was widened to 14 lanes back in 2008. If you work in the energy corridor, your commute is genuinely short. Downtown is doable. The medical center is a longer haul than the map implies.

The advice I give every relocating buyer is the same: before you sign anything, drive from the actual house to the actual office at the actual hour you would leave. Not midday, not on a weekend while you are house hunting. Tuesday at 7:15. It is the single most common regret I hear, and it is entirely preventable.

Weather, and the flooding question

Summers are hot and humid, roughly June through September, and everything is air conditioned. Winters are mild with occasional hard freezes that Texas infrastructure does not love.

Hurricane season runs June through November. You will hear about Hurricane Harvey, and you should ask about flooding, but ask it correctly. Flood risk here is a lot level question, not a city level one. Parts of Katy flooded badly in 2017, largely older neighborhoods sitting inside reservoir flood pools, while other areas nearby stayed dry. New construction since 2018 is built under stricter elevation rules than anything before it.

We wrote a full breakdown of this, because it deserves more than a paragraph. See Does Katy, TX Flood? before you choose a homesite.

What surprises people most

The property tax math. Covered above, and it is the big one. Budget on the monthly payment including taxes and HOA, not the price.

How spread out everything is. Katy is not walkable in the way transplants from older cities expect. You will drive, a lot.

How new most of it is. Large parts of the area were farmland recently. That brings beautiful new homes and also means some neighborhoods are still surrounded by construction for years.

How good the food is. Greater Houston is one of the most diverse metros in the country and Katy has inherited a genuinely excellent, wildly varied restaurant scene. This one surprises people in a good way.

Homeowners insurance. Coastal Texas premiums are higher than most of the country. Get real quotes early, not at the end.

A sensible order of operations

If you are relocating from out of state, this sequence saves people the most pain:

Pin down your commute anchor first, then look at communities within a tolerable drive of it. Confirm the school zoning for specific addresses rather than trusting the city name. Get the section level MUD rate and build a real monthly payment. Get insurance quotes early. Check the flood picture on the specific lot. Then, and only then, start falling in love with floor plans.

Doing it in that order feels backwards and slow. It is much faster than the alternative, which is picking a house first and discovering the payment, the school or the drive afterward.

If you want a hand working through it for a specific community or homesite, reach out. Relocating buyers are most of who I work with, and the questions above are the ones I answer every week.

Sources

U.S. Census Bureau QuickFacts, Katy city, Texas
Community Impact, how Katy and Fulshear demographics changed in five years, February 2026
Niche, 2026 Katy Independent School District Rankings
Wikipedia, Katy, Texas, location, counties and Interstate 10
New Home Know It All community research on Katy MUD rates