Douglas County ZIP Codes
Illinois, United States · 9 codes
Douglas County in Illinois has 9 ZIP codes, from 61910 to 61956, serving 9 places.
ZIP codes in Douglas
Frequently asked questions
What is the ZIP code of Douglas?
Douglas has 9 ZIP codes, from 61910 to 61956. The table lists the places each one serves.
How many places are listed in Douglas County?
9 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.