| Official Name: | Big Rock, Iowa |
| Settlement Type: | unincorporated community |
| Mapsize: | 250x200px |
| Pushpin Map: | Iowa |
| Pushpin Map Caption: | Location of Big Rock within the state of Iowa |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Iowa |
| Subdivision Type2: | County |
| Subdivision Name2: | Scott County Clinton County |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation M: | 206 |
| Elevation Ft: | 676 |
| Coordinates: | 41.7703°N -90.8264°W |
| Area Code: | 563 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 454621 |
| Population As Of: | 2020 |
| Population Total: | 49 |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.85 |
| Area Total Sq Mi: | 0.33 |
| Area Land Km2: | 0.85 |
| Area Water Km2: | 0.00 |
| Area Land Sq Mi: | 0.33 |
| Area Water Sq Mi: | 0.00 |
| Population Density Sq Mi: | 148.48 |
| Population Density Km2: | 57.40 |
Big Rock is an unincorporated community in Scott and Clinton counties, Iowa, United States. The community is named for a large boulder.
Big Rock is located at the intersection of County Road Y42E and 317th Street, in the northwest corner of Scott County, northwest of Dixon and south of Wheatland.
Big Rock was founded by Peter Goddard in 1855, named after a large rock in the area.[2]
For 113 years, one of the town's main businesses was Horstmann's General Store, a general store where area residents could purchase groceries, supplies and miscellaneous items. The store closed in 2010 after the owner died.[3] The town at one time also had a railroad station,[4] a lumber yard, a dance hall, and a tavern, all of which also have since closed. It is home to a local cemetery, with dates of death going back to the mid-1880s and earlier.The city used to be a shipping port for timber and wood, as well as distributed ice throughout the area via a small waterfall that was accessed in a wooded area away from the main highway that now runs through the middle of the town. This ice was brought across from the wooded area and then slid down a large hill to deliver to the town and the rail yard for distribution.
The population was 97 in 1940.[5]
Big Rock was also home to two churches, one of which was torn down in the early 2000s.
The town still from time to time will get together for "Big Rock days", a celebration of the local community in front of the large rock in which the town is named after.[6]