Erasmia has roughly equal numbers of Hindu and Muslim residents, with a large number of mosques and temples, the oldest mosque being the PMT Jumma Masjid in Jewel Street. Many of the Muslim residents are Memons or Surtis. There are also many recent South Asian (Indian and Pakistani) residents, who immigrated to South Africa after the end of Apartheid.
Laudium is a relatively wealthy area (which is unusual for a township), with very large mansions visible from the R55 road (although technically many of these homes are in Claudius, not Laudium).
An economically deprived area of Laudium (described in an academic paper as a "ghetto"), informally called White Blocks (named after their paint colour), with single and multi-family government-built dwelling units is situated in the western part of Laudium. However, the Indian township of Lotus Gardens was established in the early 1990s, north of Church Street, and many Indian families from White Blocks were relocated there, and some old units were torn down (Lotus Gardens developed into a multiracial suburb). White Blocks continues to exist though the units are no longer exclusively painted white. The Laudium Police Station is in White Blocks, in a converted unit.
Another public housing development, in Extension 2, consisting of council flats, was later sold to residents, and is now called Himalaya Heights.
After the end of Apartheid, many residents of Laudium moved to the neighbouring (formerly whites-only) suburbs of Erasmia and Christoburg which lie directly south of Laudium, and, eventually, a link road was constructed, and later tarred, allowing for direct travel between the suburbs (previously, the only way to travel between Laudium and Erasmia was a circuitious route via the R55), and by the time of the 2001 Census, Indians made up almost 66% of the population of Erasmia and Christoburg, having largely displaced their white residents in the preceding ten years.
Significant numbers of more affluent Indian residents began relocating out of Laudium and Erasmia to newly established nearby security estates in western Centurion in the late 2000s.
The black township of Atteridgeville lies directly north of Laudium, although the two areas are separated by a series of hills, and no direct tarred road link exists between the two.
Laudium has a large number of government schools. However, since the end of Apartheid, most Indian children from Laudium have begun attending private religious schools, or schools in formerly white areas. While the government schools continue to be staffed mostly by Indian teachers, most of the pupils in these schools are black and commute daily from black townships.
The Laudium Hospital, a state hospital created under apartheid for Indians from Laudium and surrounding areas, closed down, and is now the Laudium Community Health Centre.
Laudium has a number of private medical practitioners and pharmacies.