Hasn’t been any lead in house paint since the 80’s, none at all in newer construction.
If your house was built from about 1900 to MAYBE 1978 you MIGHT have measurable lead based paint in it (now window putty could be a different matter).
Yes in the old days before the 1980s lead was what made bright white house paint white. There are still many pre1980 houses around, but the biggest concentration of interior lead based paint would be in older, poorer neighborhoods. Yeah, more likely black areas.