| Lake Arthur Estates, Pennsylvania | |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Pennsylvania#USA |
| Pushpin Label: | Lake Arthur Estates |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Butler |
| Subdivision Type3: | Township |
| Subdivision Name3: | Muddy Creek |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.72 |
| Area Land Km2: | 1.72 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 494 |
| Population Density Km2: | 287.68 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 1211 |
| Coordinates: | 40.9608°N -80.1536°W |
| Postal Code Type: | ZIP codes |
| Blank Name: | FIPS code |
| Blank Info: | 42-40948 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2633668 |
| Area Total Sq Mi: | 0.66 |
| Area Land Sq Mi: | 0.66 |
| Area Water Sq Mi: | 0.00 |
| Population Density Sq Mi: | 745.10 |
Lake Arthur Estates is a census-designated place[3] and mobile home court located in Muddy Creek Township, Butler County, in the U.S. state of Pennsylvania. Located near the intersections of I-79 and US 422, the village is situated west of Lake Arthur, a reservoir on Muddy Creek. The community is also just west of Moraine State Park, which surrounds the lake. As of the 2010 census the population was 594.[4]