Travellers remain pitched up on Penwortham Holme with horses grazing the playing fields.
AdvertisementAround 20 vehicles have arrived since Tuesday to set up camp in the area.
South Ribble Borough Council has commenced legal proceedings to remove the illegal settlement.
Penwortham residents said more vehicles had been arriving in the last 24 hours.
The travellers are parked near the boundary fence with the allotments.