ZIP Code 61257

ZIP code 61257 is the delivery code the USPS assigns to Hillsdale, Illinois. The ZIP lies within Rock Island County. Clocks here follow the America/Chicago time zone (UTC-5).

About 1,345 people live in this ZIP code, and the median household income is roughly $55,172 a year. Figures come from the U.S. Census Bureau American Community Survey and are refreshed as new five-year estimates are released.

What you can do with ZIP code 61257

• Write a mailing address: Hillsdale, IL 61257. The ZIP goes last, after the state abbreviation.
• Check whether a shipping or delivery quote applies to this area — most US carriers price by ZIP code rather than by city.
• Look up the local time zone before scheduling a call — the ZIP tells you which zone applies to that address.
• Compare the ZIP with neighbouring codes to see how population and income shift block by block.