Eligible opposite-sex couples have been able to form a civil partnership since December 2019 and Office for National Statistics (ONS) figures show 44 couples in the area formed civil partnerships in 2020 – along with one couple on New Year’s Eve 2019
They were among over 7,700 couples nationally to have done so by the end of 2020.
Previously, only same-sex couples could enter into civil partnerships.
A spokeswoman from the Equal Civil Partnerships campaign group said the coronavirus pandemic meant 2020 was not the ideal first year for mixed-sex civil partnerships that was hoped for.
The figures also show the popularity of same-sex civil partnerships nationally has plummeted since the first legalised gay marriages took place in 2014.
In 2020, just 785 took place.
There was one same-sex civil partnership in Northumberland in 2020 – up from none in 2019.
An ONS spokesman said: "There were almost ten times as many partnerships between opposite-sex couples than same-sex couples in 2020.
“Same-sex civil partnerships in England reached a record low in 2020 and may have been driven by the pandemic restrictions, where registrations services were temporarily suspended.”
There were also 671 same-sex civil partnership dissolutions granted nationally in 2020 – with 54% of these to female couples.