| Grassflat, Pennsylvania | |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Pennsylvania#USA |
| Pushpin Label: | Grassflat |
| Pushpin Map Caption: | Location in Pennsylvania |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Clearfield |
| Subdivision Type3: | Township |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 2.93 |
| Area Land Km2: | 2.93 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 479 |
| Population Density Km2: | 163.50 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 1470 |
| Coordinates: | 41.0025°N -78.1144°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 16839 |
| Blank Name: | FIPS code |
| Blank Info: | 42-30528 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1175985 |
| Area Total Sq Mi: | 1.13 |
| Area Land Sq Mi: | 1.13 |
| Area Water Sq Mi: | 0.00 |
| Population Density Sq Mi: | 423.52 |
Grassflat is a census-designated place[3] located in Cooper Township, Clearfield County, in the state of Pennsylvania. As of the 2020 census, the population was 479.[4]
Pennsylvania Route 53 passes just west of the community, leading 3miles southwest to Interstate 80, Exit 133 at Kylertown and east to Snow Shoe.