| Clay, Pennsylvania | |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Pennsylvania#USA |
| Pushpin Label: | Clay |
| Pushpin Label Position: | top |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Lancaster |
| Subdivision Type3: | Township |
| Subdivision Name3: | Clay |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 5.82 |
| Area Land Km2: | 5.79 |
| Area Water Km2: | 0.03 |
| Population As Of: | 2020 |
| Population Total: | 1869 |
| Population Density Km2: | 322.73 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 359 |
| Postal Code Type: | ZIP code |
| Postal Code: | 17522 (Ephrata) |
| Area Code: | 717 |
| Blank Name: | FIPS code |
| Blank Info: | 42-13952 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1171942 |
| Area Total Sq Mi: | 2.25 |
| Area Land Sq Mi: | 2.24 |
| Area Water Sq Mi: | 0.01 |
| Population Density Sq Mi: | 835.87 |
Clay is an unincorporated community and census-designated place (CDP) in Clay Township, Lancaster County, Pennsylvania, United States. It is located along U.S. Route 322 between Brickerville and Ephrata. As of the 2010 census, the population was 1,559.[2]
Clay is in northern Lancaster County, in the southern part of Clay Township. Clay is bordered by Hopeland to the west and northwest. US 322 leads northwest to Quentin and southeast 5miles to Ephrata. It is north of Lancaster, the county seat.
According to the U.S. Census Bureau, the Clay CDP has a total area of 5.8sqkm, of which 0.03sqkm, or 0.49%, are water.[3]
Middle Creek, which forms the border between Clay Township and Elizabeth Township, runs through the west side of the community, flowing southeast towards Cocalico Creek, a tributary of the Conestoga River and part of the Susquehanna River watershed.