Caroline Wairimu Njoroge (ANC) was elected to the Kigumo constituency's Kigumo ward. She was previously nominated after failing in 2017 to reclaim the position she had won in 2013.
Elizabeth Mwangi, a former nominated MCA, was elected in Maragua's Kimorori Wempa ward. The UDA controlled 25 of the 30 MCAs in Rigathi Gachagua's home county of Nyeri.
Four independent MCAs were elected, as well as one on the Amani National Congress ticket (ANC).
There were 18 re-elections, with four women, three more than the previous term. MCA Kiruga Thuku of Chinga said the outcome was a clear indication of where voters' hearts were.
Caroline Wanjiku Muriithi, the Karumandi ward representative, is Kirinyaga's only woman elected to the County Assembly.
Ms Muriithi was declared the winner of the Karumandi ward after receiving 4,834 votes against her opponent Harrison Muchira's 3,774 votes.
Ms Muriithi's political career began when Azimio's Martha Karua helped nominate her to the county council. She had previously served as the Councillor for Karumandi on the defunct county council for five years.
Her husband, she says, has always encouraged her despite her difficult circumstances as a politician.
Kinyua Wangui (Mutira) and David Mathenge (Baragwi) are two other ward representatives who have retained their seats under UDA.
New entrants who ran on a UDA ticket are; Jinaro Njamumo(Mutithi), Jeremiah Makimi (Kariti), former Kirinyaga county council chairman Geoffrey Murimi (Kiine), and Peter Karinga (Tebere).
Others are veterinarian James Wambu (Kangai), Kenneth Mwendia (Nyangati), Fredrick Maina (Inoi), Eric Muchina (Kerugoya ward), and John Ngahu (Gathigiriri).
The list also included Joseph Kiragu (TSP), Moses Maina (Kanyekiini), Isaiah Mureithi (Kabare), Timothy Kariuki (Njukiini), Daniel Muriithi (Ngariama), Charles Nyamu (TSP), Thomas Mwangi (Mukure) and Jubilee's Peter Gitonga of Wamumu ward.
[Report by Boniface Gikandi, Jane Mugambi and Phares Mutembei]