61204 ZIP Code

Questions about 61204

What city is ZIP code 61204 in?+

61204 is associated with Rock Island, Illinois in the bundled dataset. ZIP areas can cross city and county lines, so use the city and county fields together.

What county is 61204 in?+

Rock Island. County boundaries and postal areas are not the same thing; a ZIP can serve addresses in more than one county.

What timezone is 61204 in?+

America/Chicago. This is the IANA timezone name for the city associated with the ZIP.

Is 61204 a real ZIP code?+

It appears in the public city dataset bundled with this site. That confirms the format and city association, not that a specific street, mailbox, or resident exists.