Founded in 1883, Brown County is one of 93 counties in the state of Nebraska. Historically, Brown County was formed from unorganized territory. The city of Ainsworth is the county seat. With FIPS code of 17, Brown County has a population of 2,908 and area of 1,221 square miles (3,162 km2).
List of all cities in Brown County, NE alphabetically
| City/Town | Postal Code | Area Code |
| Ainsworth, NE | 69210 | 402 |
| Johnstown, NE | 69214 | 402 |
| Long Pine, NE | 69217 | 402 |