Katy Texas ZIP Codes

Katy holds 6 ZIP codes, all inside one county and one postal prefix.

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Katy codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Katy. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

Every Katy ZIP code begins 774. Those first three digits identify the sectional center facility that processes mail for this part of Texas. Statewide that range covers 83 ZIP codes, so Katy accounts for 7% of it.

Every Texas ZIP prefix and the region it covers →

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Katy occupies.

• 281 Area code 281
• 346 Area code 346
• 621 Area code 621
• 713 Area code 713
• 832 Area code 832

Katy Texas area codes in full →

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.