https://blackdemographics.com/households/african-american-income/
3rd table
Median Black Household Income (all) = $49,549
Median Black Household Income (married parents) = $74,878 - which is over the national median
You can also see how this compares to all household, the delta reduces.
Here is some good info on two parent households in general with links to source materials:
https://www.aei.org/articles/the-power-of-the-two-parent-home-is-not-a-myth/#:~:text=Although%20in%20general%2C%20youths%20raised,of%20white%20two%2Dparent%20families.
The data is crystal clear on this.