Katy has two main ZIP codes, and they describe two different halves of the city. 77493 covers northwest Katy and the historic old town, home to Sunterra, Elyson and Old Katy, while 77494 wraps the south and southwest around Cinco Ranch, Grand Lakes and Firethorne. The two overlap on schools and commute, but they differ on community style, county and price, so knowing which one you are searching matters.
Which communities are in 77493 and which in 77494?
ZIP boundaries in Katy do not line up perfectly with neighborhood lines, and a few communities straddle two codes, but the broad split is clear. The 77493 code covers northwest Katy: Sunterra, Elyson, Ventana Lakes, Williamsburg, Katy Lakes, Morton Creek and the historic Old Town Katy district along Avenue A. The 77494 code covers south and southwest Katy: the western and northern sections of Cinco Ranch, Grand Lakes, Firethorne, Seven Meadows, Tamarron, Silver Ranch and Cardiff Ranch.
For context on the home this site covers, 137 Eliana Shores Dr is a Sunterra address in 77493. One common mix-up: Cross Creek Ranch is often grouped with these communities but actually sits in Fulshear's 77441 code, so it falls outside both lists.
County and schools: the address decides the district
The two ZIP codes sit in different counties. Zip-code references put 77493 mostly in Harris County with a Waller County share, roughly two-thirds and one-third, while 77494 is primarily Fort Bend County with parts of Harris and Waller. Katy ISD serves large parts of both codes, but Royal ISD covers some 77493 sections and Lamar CISD covers a few 77494 pockets, which is why two homes in the same ZIP can feed different schools.
That is why a Katy school assignment is settled by the exact address, not by the ZIP code or the neighborhood name. Before you make an offer, run the address through Katy ISD's Find My School lookup and get the current assignment in writing. This site's school guide walks through the Sunterra feeder pattern for 137 Eliana Shores Dr in detail.
Price: 77494 runs higher, 77493 is the value side of Katy
Sourced 2026 numbers put 77494 roughly $100,000 to $150,000 above 77493 at the median. On the 77494 side, Redfin's ZIP page (accessed October 2026) shows a median sale price of about $448,000 last month, down 8.1% year over year, while Zillow lists an average home value of $487,108 as of July 31, 2026, and HAR.com-based reporting from the Kinne Group puts the July 2026 median near $500,000.
On the 77493 side, Redfin (accessed October 2026) shows a median sale price of about $341,000 over the last three months, up 3.3% year over year, and the Zachre Group's 12-month sold data through August 2026 puts the median at $335,000. The gap reflects what each code contains: 77494 holds more established, fully built-out communities with mature amenity packages, while 77493 holds the newer growth corridor plus the older town core.
Each source defines its period and metric differently, and Zillow's home value is not the same as a Redfin sale median, so treat these figures as directional rather than a quote for any single home.
Location and commute: two routes into Houston
Both ZIP codes sit near I-10 and the Grand Parkway (TX-99), so neither is a bad commute by Katy standards. The 77493 side stretches northwest along Clay Road and Katy Hockley Road, a few miles north of I-10, which is the position Sunterra buyers should expect: solid highway access, with two-lane access roads that can build up at rush hour. The 77494 side runs south and southwest, closer to the Grand Parkway and the Westpark Tollway, which is why south Katy commuters often prefer the toll route into Houston.
This site's commute guide covers the I-10 and Westpark options with typical drive times from the Katy area into downtown Houston, so you can test both sides of the comparison against your own schedule.
What this means for a Sunterra search
Sunterra is a 77493 community, and that matters for two reasons. First, most published Katy market data covers 77494 or greater Katy, while community-level Sunterra statistics are thin, which is exactly why this site's market page uses 77494 as a reference market and says so plainly. Second, because 77493 is the value side of Katy, a waterfront home like 137 Eliana Shores Dr sits above Sunterra's resale median while still coming in well under typical 77494 pricing.
If you are weighing homes in both ZIP codes, ask Carol Jukes for a current price comparison. She can pull live comps for 77493 and 77494 and show you what each dollar buys in each code, and she can arrange a private tour of 137 Eliana Shores Dr so you can see the 77493 side in person. Call (832) 212-2772 or send a message through the contact page.