Onderombapa is a growth point with potential in Aminuis Constituency, some 125 km from the regional capital, Gobabis. There is a clinic at the growth point.
Possible areas of investment at Onderombapa include livestock farming and calcrete mining.
Employment and major source of income for residents are livestock farming and small businesses.
Private businesses at Onderombapa include Rituna Winkel, Kahirona General Dealer, Moreson Winkel & Service Station and Kondjouua General Dealer.
There is a cooperative, Pamwe Cooperative, at the growth point.