As of the 2010 census, the village population was 41,496. Most of the village is located within the 10th Congressional District of Illinois, although the southern portion is represented in the 8th Congressional District.
The Raupp Museum, operated by the Buffalo Grove Park District, is the town's museum of local history. Saint Mary's Church, completed 1899, is the oldest building in the village. Lou Malnatis Pizzeria is housed in the second oldest building in the village (also completed 1899). Located around the same downtown area, there is the Buffalo Grove Town Center, which is a major shopping and retail destination within the village, at the Buffalo Grove Road and McHenry Road intersections with Lake-Cook Road, being anchored by the Buffalo Grove Theaters and by Bowlero: a bowling/arcade/laser-tag venue that hosts birthday parties.
During the summer, Buffalo Grove hosts two festivals. The Buffalo Grove Invitational Fine Arts Festival is held in Buffalo Grove Town Center in mid-July, with over 30,000 visitors attending on average. In September, Buffalo Grove hosts the multi-day Buffalo Grove Days festival around the intersection of Deerfield Road and McHenry Road. The festival is mostly home to carnival games, roller coaster rides, arts and craft booths, food vendors, and live music. There is a parade held at the beginning of the festival and fireworks on the Saturday night. The festival usually attracts not just Buffalo Grove residents, but also residents from the neighboring communities. Throughout the summer Buffalo Grove hosts a Farmer's Market at the Spray and Play Pool on McHenry Road west of the intersection of Buffalo Grove Road.
In 2014, the Buffalo Grove Park District opened the Community Arts Center, which houses a theater space and classrooms. The theater is used by the Park District's local theater company, Big Deal Productions.Buffalo Grove relies on multiple arterial roads. Going north-south, the village uses Milwaukee Avenue (Illinois Route 21) on the east, Buffalo Grove Road and Weiland Road down the center, and Arlington Heights Road on the west. Going east-west, the village uses Dundee Road (Illinois Route 68) to its south, Lake-Cook Road and Deerfield Parkway towards the center, and both Aptakisic and Half Day Road (Illinois Route 22) to its north. McHenry Road (Illinois Route 83) acts as a diagonal road in the village, going north-south in some portions, but east-west in others.
Buffalo Grove came in at No. 7 among the best places to live in America and as the best place to live in Illinois. ... Buffalo Grove got an A+ overall rating, with another A+ for public schools and A+ for being good for families. The town got an A for housing, and an A- in crime and safety and diversity.
Stevenson High School is one of the only high schools in the country to receive the United States Department of Education's "Excellence in Education" Blue Ribbon Award five times. In addition, Stevenson has been named one of America's top high schools by both U.S. News & World Report and Newsweek magazines, and has been named a National School of Distinction in Arts Education by the John F. Kennedy Center for the Performing Arts