ZIP Code Distance Calculator
How far apart two places are, the drive, the time difference, and the two compared side by side.
How far apart two places are, the drive, the time difference, and the two compared side by side.
In a straight line between the centers of the two ZIP Codes: 2 miles (3 km).
A ZIP Code is an area, not a point: for places this close, two addresses can be nearer or farther apart than the centers are.
| Step | Instruction | Distance |
|---|
77491 has no Census figures of its own (PO Box and single-address ZIP Codes don't: their residents are counted in the ZIP Codes around them), so there is nothing to compare side by side.
| Measure | A 77450 | B 77491 |
|---|---|---|
| City | Katy, TX | Katy, TX |
| County | Harris County | Harris County |
| Time zone | Central | Central |
| Metro area | Houston-Galveston-Brazoria, TX CMSA | Houston-Galveston-Brazoria, TX CMSA |
| ZIP Code type | Standard | PO Box |
| Area codes | 281, 346, 832 | 281, 346, 832 |
| Land area | 20 sq mi | – |
| Addresses that get mail | 57,292 | 5,305 |
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Developer tools: Claude Code, Cursor, VS Code, CodexThe distance, the direction and both time zones above came from one call to the ZIP Codes API /v2/distance endpoint. Each place's facts and Census figures came from one /v2/zip call each, and the API has the same figures for any year from 2011 to 2024.
This comparison used 7 credits; a free key includes 2,500 a day.
curl -H "X-Api-Key: YOUR_KEY" "https://api.zip-codes.com/v2/distance?from=77450&to=77491"
The real /v2/distance response for this pair. Coordinates are rounded to 3 decimals here; the API returns full precision.
{
"success": true,
"request": {
"from": "77450",
"to": "77491"
},
"results": [
{
"success": true,
"input": {
"from": "77450",
"to": "77491"
},
"from": {
"country": "US",
"code": "77450",
"code_type": "ZIP",
"city": "Katy",
"state": "TX",
"county": "Harris",
"location": {
"lat": 29.746,
"lon": -95.735
},
"timezone": {
"source": "timezone-boundary-builder",
"product": "Time zone boundaries (with oceans)",
"attribution": "Time zone boundaries \u00a9 OpenStreetMap contributors, timezone-boundary-builder (ODbL); time zone rules: IANA tz database",
"iana_name": "America/Chicago",
"name": "Central",
"abbreviation": "CST",
"abbreviation_dst": "CDT",
"utc_offset": -6,
"utc_offset_dst": -5,
"observes_dst": true
},
"input_type": "code"
},
"to": {
"country": "US",
"code": "77491",
"code_type": "ZIP",
"city": "Katy",
"state": "TX",
"county": "Harris",
"location": {
"lat": 29.768,
"lon": -95.752
},
"timezone": {
"source": "timezone-boundary-builder",
"product": "Time zone boundaries (with oceans)",
"attribution": "Time zone boundaries \u00a9 OpenStreetMap contributors, timezone-boundary-builder (ODbL); time zone rules: IANA tz database",
"iana_name": "America/Chicago",
"name": "Central",
"abbreviation": "CST",
"abbreviation_dst": "CDT",
"utc_offset": -6,
"utc_offset_dst": -5,
"observes_dst": true
},
"input_type": "code"
},
"distance": {
"miles": 1.83,
"km": 2.94
},
"bearing": 326.6
}
],
"meta": {
"credits": {
"used": 1
}
}
}