A hard-fought game at Bradford on Saturday went the way of the home side after Nahki Wells netted the only goal but other results over the weekend mean the Cobblers still occupy the final automatic promotion place going into their final four league fixtures.
"Thank you to our fans for supporting us again and please don't lose faith with us because we will win away from home," said Boothroyd afterwards.
His men now have a week to prepare for the visit of struggling York City to Sixfields.
Bradford manager Phil Parkinson felt his side stood up well to the attacking threat posed by the Cobblers as the Bantams maintained their play-off push.
"When you play against Northampton the two centre halves and the keeper are very important. We gave Andrew Davies the job of attacking the first ball and he was immense."