Lithonia's housing stock reflects its layered history. The compact city center contains older, modest single-family homes, many dating to the mid-20th century, while the broader Lithonia area and adjacent unincorporated DeKalb County are filled with established subdivision housing built across several decades. Ranch and split-level styles are common, alongside traditional brick and frame construction on generous suburban lots. As development pushed outward from Atlanta through the late 20th century, newer subdivisions, townhome communities, and apartments were added along major corridors, giving the area a varied mix of housing types and eras. The presence of large protected green spaces to the southeast limits development in that direction, helping preserve the open, wooded character that distinguishes much of the area from more densely built inner-ring suburbs.

The historic heart of Lithonia centers on Bruce Street and the surrounding downtown blocks, where the historic Bruce Street School and long-standing local institutions anchor the community's identity. This core dates to the era when Lithonia was a busy quarry town and retains a distinctly small-town feel. Radiating outward, the broader Lithonia area blends into larger residential communities of southeastern DeKalb County, including established subdivisions around the Redan and Stonecrest areas. The Mall at Stonecrest and its surrounding commercial district serve as a regional retail anchor. To the southeast, the Arabia Mountain National Heritage Area separates the residential fabric from preserved open land, while the Flat Rock community, one of Georgia's oldest African-American settlements, adds deep historical depth to the surrounding landscape.

Lithonia offers a small-town rhythm within a major metropolitan region. The historic downtown is compact and walkable, and community life often revolves around schools, churches, and local events tied to the city's long history. The Arabia Mountain National Heritage Area brings an active, outdoors-oriented culture, with cyclists, hikers, and nature enthusiasts frequenting the paved Arabia Mountain PATH and the granite outcrops of the preserve. Because the city is small, much of daily commerce, dining, and entertainment happens in the surrounding DeKalb commercial corridors and the nearby Stonecrest district. That arrangement gives residents a quiet, rooted home base while keeping the full range of metro Atlanta amenities—including downtown Atlanta's cultural and dining scene—within a reasonable drive along I-20.

Lithonia is served by the DeKalb County School District, one of Georgia's largest public school systems. Students in the city and much of the surrounding area attend a cluster of schools anchored by Lithonia High School and Lithonia Middle School, with elementary options including Princeton Elementary and Redan Elementary in the wider Lithonia footprint. DeKalb County also operates magnet and choice programs across the district, and the area's proximity to Atlanta puts private and charter options within reach for families who seek them. The school district's scale means school assignments can vary by specific address, so families relocating to the Lithonia area generally verify the exact school attendance zones for a given home rather than relying on the city name alone.

Lithonia sits directly along the I-20 corridor, which provides a straightforward east–west route into downtown Atlanta and connects to I-285, the Perimeter highway, for access to the wider region. Hartsfield-Jackson Atlanta International Airport is reachable via I-285 to the south, and the interchange-heavy network of DeKalb County gives drivers multiple ways to reach job centers around the metro. Lithonia itself does not have a MARTA rail station, but MARTA operates bus service through the area, including routes that connect to the Indian Creek station on the Blue Line for rail travel into central Atlanta. That combination of direct interstate access and bus-to-rail transit makes the area workable for commuters who split their time between car and train.

Lithonia's standout recreational asset is the Arabia Mountain National Heritage Area, which surrounds the city to the south and east. The Davidson-Arabia Mountain Nature Preserve protects roughly 2,550 acres of granite outcrops, lakes, creeks, and forests, with trails that lead across the bare-rock summit of Arabia Mountain itself. The 30-plus-mile paved Arabia Mountain PATH links trailheads, historic sites, and communities for cyclists and pedestrians, while Panola Mountain State Park, just to the south, adds protected woodland and granite habitat. The Flat Rock Archives and the historic Bruce Street School preserve the area's African-American heritage. Together these spaces give Lithonia an unusual abundance of protected open land for a community so close to the center of Atlanta, supporting hiking, cycling, and nature study year-round.