Otorohanga was the first North Island region to win back the top spot since 2013, after Westland proved to be the most fruitful in 2015 and Kaikoura in 2014.
Rodney's second place came on the back of one couple winning $44m with Powerball.
"I was at work on smoko break and decided to check our ticket. I saw that I had three numbers in a row, so I quickly checked that I had the Powerball number and then went back and checked the rest of the numbers," the winner said.
"As soon as I saw I had all the numbers on one line I just yelled 'holy s***!' - my boss thought I'd chopped my arm off with a saw."
An Ashburton couple, who used their $22.2m Powerball win to help pay for their dream wedding, sent the mid-Canterbury town into third spot.
More than $503m in prizes were won last year with Lotto, including 282 First Division prizes.
New Zealand's biggest winning districts for 2016:
1. Otorohanga District (per capita $1526.56)
2. Rodney Ward ($948.67)
3. Ashburton District ($762.11)
4. Ruapehu District ($647.32)
5. Kaikoura District ($356.56)
6. Dunedin City ($282.76)
7. Timaru District ($229.13)
8. Waitemata and Gulf Ward ($189.43)
9. Wairoa District ($183.45)
10. Opotiki District ($181.99)