United Lincolnshire Hospitals NHS Trust was caring for 104 coronavirus patients in hospital as of Tuesday, figures show.
NHS England data shows the number of people being treated in hospital for Covid-19 by 8am on July 12 was up from 101 on the same day the previous week.
The number of beds at United Lincolnshire Hospitals NHS Trust occupied by people who tested positive for Covid-19 more than quadrupled in the last four weeks – 28 days ago, there were 21.
Across England there were 13,621 people in hospital with Covid as of July 12, with 264 of them in mechanical ventilation beds.
The number of Covid-19 patients hospitalised nationally has more than doubled in the last four weeks, while the number on mechanical ventilators has more than doubled.
The figures also show that 111 new Covid patients were admitted to hospital in United Lincolnshire Hospitals NHS Trust in the week to July 10. This was up from 103 in the previous seven days.