| Washington Mills, Iowa | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | USA Iowa |
| Pushpin Label: | Washington Mills |
| Pushpin Map Caption: | Location in Iowa |
| Coordinates: | 42.3006°N -90.7822°W |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Dubuque County |
| Unit Pref: | US |
| Elevation M: | 249 |
| Elevation Ft: | 817 |
| Population Density Sq Mi: | auto |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 464793 |
Washington Mills is an unincorporated community in Dubuque County, Iowa, United States.
Washington Mills' population was 75 in 1887,[1] and was 112 in 1902.[2]