In South Willington City, population and streets are divided by Brandywine Creek and Christina River. The town is located between Brandywine Creek and Northeast Boulevard. The town's median age is 38.3. The area is located in Northeast and Central Connecticut. The population of South Willington City is about 18,000 people. There are two high schools and two low schools in the city. The town has a total of four churches and one senior center.