Pompey are the 19th best supported club on their travels in the Football League.
According to attendance figures, the Blues averaged 1,142 away from Fratton Park during the campaign.
That puts them ahead of 11 Championship sides, including Ipswich, Watford, Wigan, Reading, Charlton and Millwall.
While Pompey average only 145 fewer than play-off semi-finalists QPR.
Remarkably, it has been achieved in League Two where often the Fratton faithful have been restricted by the capacity of away ends.
Inevitably many have been sell-outs, with a ballot taking place for the journey to AFC Wimbledon in November.
Regardless, it has been a magnificent effort from Pompey fans to display such unwavering support for a side who have spent the vast majority of the season fighting to stay in the Football League.
And it far exceeds the club’s League One average of 894 the previous season.
A staggering 15 Blues away matches attracted more than 1,000 travelling fans, with the January trip to Oxford topping the lot.
Despite being 19th in the table heading into the fixture, away fans accounted for 2,365 of the total of 8,443 in attendance for the goalless draw.
The Blues’ second highest was 1,560 at Cheltenham, while the noon televised match at Accrington saw 1,001 visiting supporters.
Notably, Bury represented the largest crowd for the longest distance, with 1,498 turning up for last month’s 4-4 draw at Gigg Lane.
The lowest away following taken by Pompey was for the Tuesday night trip to Rochdale, which proved to be Richie Barker’s last in charge.
A figure of 471 were present at Spotland, with plenty shouting for the manager’s head at the final whistle.
In terms of away fans at Fratton Park, Accrington (61), Morecambe (114) and Burton (123) were the lowest.
In League Two overall, Accrington had the lowest average away attendance (124) while the 25 they took to Dagenham & Redbridge was the smallest of the season anywhere in the division.