| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Happy Acres | city | Maryland | United States | 39.53 | -77.05 | 830 | |
| Happy Acres | city | Maryland | United States | 39.44 | -76.35 | 177 | |
| Happy Knoll | city | Maryland | United States | 39.51 | -76.24 | 246 | |
| Happy Valley | city | Maryland | United States | 39.67 | -76.81 | 830 |