Harker Heights' housing stock reflects its rapid growth since the 1960s, when it began as a residential subdivision for Fort Hood personnel. Buyers find a broad mix of single-family homes—ranch and traditional brick styles from the city's early decades, along with a substantial supply of newer construction built as the population more than doubled since 2000. Subdivisions dominate, with homes on comfortable lots and many neighborhoods offering parks, sidewalks, and community amenities. Townhomes and rental properties also serve the area's military population, which tends to move frequently with assignments. The market is known for relative affordability and a strong rental base, attracting both owner-occupants and investors. Home values are moderate by Texas standards, and the steady demand from Fort Cavazos families gives the market a distinctive rhythm tied to military relocation cycles.

Harker Heights is a city of planned subdivisions rather than a traditional downtown core, reflecting its origins as a master-planned residential community. Neighborhoods spread east and west along U.S. Highway 190, with the city's commercial spine running along the highway and anchored by the Market Heights shopping area. Established subdivisions from the 1960s through 1990s sit closer to Killeen, while newer developments have expanded the city's southern and eastern edges with contemporary homes and community amenities. Parks and greenbelts are distributed throughout, and several neighborhoods border creeks and wooded areas that break up the suburban grid. Because the city lacks a historic center, neighborhood identity is defined by subdivision, school zone, and proximity to Highway 190, Fort Cavazos, and Stillhouse Hollow Lake. The overall character is consistently suburban, family-oriented, and newer than its Central Texas neighbors.

Harker Heights offers a suburban, family-oriented lifestyle closely tied to Fort Cavazos and the Killeen area. The city's identity as a home base for military families gives it a welcoming, transient-friendly character, with strong schools, churches, and neighborhood associations anchoring community life. Residents shop and dine along the U.S. 190 corridor, anchored by the Market Heights retail center, and enjoy an above-average number of city parks and trails. Weekends often center on Stillhouse Hollow Lake—fishing, boating, and swimming at Dana Peak Park—or on youth sports and community events. The population skews toward families and young professionals, many with military or civilian ties to the post. The pace is relaxed and suburban, with the larger amenities of Killeen, Temple, and the Central Texas region all within a short drive, and Austin and Waco reachable for larger-city outings.

Harker Heights' public school students are served by Killeen Independent School District, a large district that educates students across Killeen, Harker Heights, and surrounding Bell County communities. The district operates multiple elementary, middle, and high schools serving the city, and its schools are a central part of community life for the area's many military and civilian families. The district's size and diversity reflect the broader Killeen–Fort Cavazos area, and school attendance zones are an important factor when choosing among Harker Heights neighborhoods. Higher education is accessible through Central Texas College in Killeen and Texas A&M University–Central Texas, both nearby, as well as Temple College and the larger universities in Austin and Waco. The combination of a full local K-12 district and nearby higher-education institutions supports the city's young, growing population.

Harker Heights is anchored by U.S. Highway 190, the Central Texas corridor that runs east-west through the city and connects Killeen to the west with Temple, Belton, and Interstate 35 to the east. State Highway 195 provides a direct route south toward Georgetown and the Austin metro, while local arterials link the city's subdivisions. The city has no passenger rail or local transit service, so daily life is car-dependent, with most residents driving to Killeen, Fort Cavazos, or Temple for work and services. The Killeen–Fort Hood Regional Airport serves the area, and Interstate 35 is about twenty minutes away, providing access to Austin and Waco. For commuters, Harker Heights' position on Highway 190 and its proximity to both Killeen and the I-35 corridor make it a convenient base within the Killeen–Temple metro, though regional trips require driving.

Harker Heights' recreation centers on Stillhouse Hollow Lake and the city's park system. Stillhouse Hollow, a 6,430-acre reservoir managed by the U.S. Army Corps of Engineers, lies within fifteen minutes of the city and offers fishing, boating, swimming, camping, and picnicking. Dana Peak Park, on the lake's shore, adds wooded trails for hiking, mountain biking, and horseback riding with lake views. Within Harker Heights, residents enjoy an extensive network of community parks, playgrounds, sports fields, and walking trails distributed through its subdivisions, a feature frequently cited as a strength of the city. Belton Lake, another major Central Texas reservoir, lies nearby as well. For a city of its size, Harker Heights combines plentiful neighborhood green space with immediate access to two large lakes and the broader outdoor offerings of Central Texas.