Stepfamily
Mom (born in '67) in Walls, Mississippi; raised between Memphis and Elmira, NY...
Uses it fairly frequently, not a "nikka" in every sentence type drop, but it would be rather uncommon if she didn't say it...
Her parents (born in the 40s) were both raised in the Mississippi Delta. Her mom died in '17 but she said it quite often, as did her family (her brothers and sisters)...Mom's dad I only heard say it as a retelling of events when he was called that, wasn't in his regular vocabulary...
By the way, her parents were high school sweethearts, only a year apart, grew up in rural Mississippi at the same time dealing with the same prejudices. One of them came from a family where "nikka" was the furthest thing from taboo, the other, I don't know about Grandpa's family, other than I know his last living brother and sister I never heard use it...
Know nothing of my Dad's family, but dad (born in '65), I've probably heard him say "nikka" 5-7 times in my whole life. He says "negro" in place of it, and he grew up in Little Rock. Never heard his mom say it and besides maybe two of his many siblings, I've never heard any of his siblings use it...
Biologicals
Mom (born in '66) grew up all over, originally from Arkansas, lived in Houston and Lansing, Michigan before going to Sacramento at 15. She says it like it's going outta style..
Dad (born in '68), born and raised in Sacramento, says it like it's going outta style. Whole family does...
..........
The N-word didn't become a real taboo until the Civil Rights era. Whites and Blacks used it frequently, especially in the South. The idea that we as a people have always been against its usage isn't verified by any historical record...