According to Meles Zenawis/EPRDF Census of 2007
Amharas in Shewa - 595,000
1. North Shewa Zone - 214,700
2. West Shewa Zone - 106,000
3. East Shewa Zone - 207,000
4. Southwest Shewa Zone 68,000
Amharas in Arsi - 455,000
1. West Arsi Zone - 78,000
2. Arsi Zone- 377,000
Amharas in Welega - 224,000
1. East Welega Zone - 131,000
2. Horu Gudru Zone - 36,000
3. West Welega Zone - 16,000
4. Kelem Welega Zone - 41,000
206,000 Amharas in Hararghe
106,000 Amharas in Jimma
100,000 Amharas in Illubabor
80,000 Amharas in Bale
36,000 Amharas in Guji
Total 1,800,000
Meles Zenawi regime counted 1.9M Amharas in Oromia in 2007 so the number is of by 100,000
Meaning 7.2% of Oromia Population was ethnically Amhara according to EPRDF in 2007
So in 1994
Oromos in Oromia - 15.7M
Amharas in Oromia - 1.6M (9%)
In 2007
Oromos in Oromia - 23.7M (+150% growth)
Amharas in Oromia - 1.9M (+120% growth)
This means either Amhara birthrates are lower or a hidden Genocide occurred in Oromia during TPLF era
This roughly estimates to 2.5% of Ethiopias population being Amharas in Oromia so using that number around 3.3M today with Amharas being 7% of Oromia population
Around 36.6% of Ethiopia's population live in Oromia
The fact is their is no evidence for the claim of 10 million amharas living in Oromia
1. Low estimate - 2 million Amharas in Oromia at 2025
2. Middle estimate - 3 million Amharas in Oromia at 2025
3. High estimate - 4 million Amharas in Oromia at 2025