• Pop: 279
• Mayor: Lee Hillis - City offices - 114 E. Main Street - City Hall 573-998-2449
• City Clerk: Melissa Lulay
• City Treasurer: Helen Crites
• Education: Elementary
• Healthcare: Nearest hospitals - 23 mi. in Poplar Bluff
• Recreation: Markham Springs, Lake Wappapello, Mark Twain National Forest

Williamsville, a community of 279 according to the 2020 census, is nestled in the Mark Twain National Forest in Wayne County. Average temperatures range from 26 degrees Fahrenheit in January to 91 degrees Fahrenheit in July. The Ozark Foothills Regional Planning Commission works with the city to foster economic development for Williamsville.

Mayor Lee Hillis and the local council work from the city hall at 114 E. Main Street. Citizens are protected by a part-time police officer and eight volunteer firemen. The median household income for the City of Williamsville, in 2020, was $40,250.

Out of a 7,004-person workforce in Wayne County, the unemployment rate is 8.3 percent as of 2020. The average hourly wage for the county is $15.36. In nearby Piedmont, McAllister Software, Windsor, Clark's Mountain Nursing Center and Z manufacturing can be found. The county's other major employers include Greenville Schools and Clearwater Schools, which employs 160; Greenville Healthcare employs 49. 

Ozark Border Electric Cooperative, headquartered in Poplar Bluff and Black River Electric Cooperative headquartered in Fredericktown, provides electric power for Williamsville. The city offers water for its residents from its two wells. The water plant has a storage capacity of 80,000 gallons. Their sewage lagoon has a capacity of 100,000 gallons a day. Williamsville's telephone and internet services are provided by AT&T, Windstream, Big River, Boycom, T-Mobile, Sparklight, and Centurylink. 

Citizens of Williamsville travel only 23 miles to receive medical services. The nearest healthcare facilities are in Poplar Bluff at Pershing Veterans Administration Medical Center, Coppertop, and Poplar Bluff Regional Medical Center. It is 15 miles to the nearest four-lane thoroughfare, US Highway 67, and 65 miles to Interstate 55. The nearest airport is in Piedmont.

Williamsville children attend the public elementary school in town. The nearest public community college, Three Rivers College, is located in Poplar Bluff with approximate enrollment 2,700. Southeast Missouri State University, a public four-year college located in Cape Girardeau, MO, is the nearest higher learning facility. 

Williamsville residents get their news from a weekly newspaper, and three different radio stations. There are seven Protestant churches and a Catholic church serving the community's spiritual needs.

Many Williamsville families enjoy the public park in town. Clearwater Lake and Wappapello Lake are both within a 20-mile radius of Williamsville. Young and old can enjoy camping, fishing, hiking/fitness/nature trails, boating, swimming, and water skiing. Markham Springs Park and Mark Twain National Forest, popular sites among outdoor enthusiasts, are also nearby.

The city is represented by 153rd District State Representative Darrell Atchison (R) and 25th District State Senator Jason Bean (R). U.S. Representative Jason Smith (R) represents Williamsville in the Eighth Congressional District.