What County Is Joliet, Illinois In?

Joliet is in Kendall County and Will County. Check a specific address near a county line.

Joliet city: generalized boundary, north up. Open street map ↗
Official code
1738570
Representative coordinates
41.516866, -88.147963
Land area
171.606 km²
Water area
1.919 km²
State
Illinois
Look up this point

The representative point identifies this area. It is not a street address or a boundary survey.

County boundaries in Joliet

This place crosses county lines. A city name alone cannot identify the county for every address. Check a point on the county map.

Coordinates of Joliet

41.516866, -88.147963 is the Census representative point, not a street address. Convert these coordinates or prepare a map link.

Elevation in Joliet

186 m · 610 ft. GNIS archived height at its named reference point (41.5187711, -88.1497913), which may differ from the Census point. Terrain height varies across the place; this is not a city-wide or surveyed elevation. Request height at a different point.

Today’s sunrise and sunset

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Approximate calculations at the representative coordinates, using a level horizon. Terrain and weather can change what you see.

Time zones in Joliet

The representative point uses America/Chicago.

Time zoneLocal time and UTC offsetNext clock change
America/ChicagoUTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.

Census ZIP areas

60403 · 60404 · 60410 · 60421 · 60431 · 60432 · 60433 · 60435 · 60436 · 60441 · 60442 · 60447 · 60451 · 60544 · 60560 · 60586

These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.

Areas sharing the mapped boundary

These areas touch this mapped boundary.

Before using this answer on a form

A city boundary, a CDP and a mailing city can mean different things.

Find the county at your current point, check its ZIP area, or find its physical time zone.

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Small boundary contacts to check

These maps have small contacts that do not confidently establish another jurisdiction or clock zone. They remain separate from the main answer. Check a precise address near the line with the responsible authority.