Gill is an unincorporated community and a U.S. Post Office in Weld County, Colorado, United States.

The Gill Post Office has the ZIP Code 80624.

[2] A post office called Gill has been in operation since 1910.

[3] The community has the name of William H Gill, an early landowner.

[4] Gill is located at 40°27′14″N 104°32′30″W / 40.45389°N 104.54167°W / 40.45389; -104.54167 (40.454001,-104.541779).