KANSAS CITY — A “classic” Thanksgiving dinner for 10 will cost $49.48 this year, up 28c, or less than 1%, from 2011, according to an annual survey conducted by the American Farm Bureau Federation.

The cost of eight items decreased, three increased and one was unchanged, according to the 12-item survey, which has been conducted annually since 1986.

The largest expenditure — a 16-lb turkey — cost $22.23 in 2012, which translated to about $1.39 per lb, or about 4c per lb more than in 2011, an increase of less than 1%. The price of the turkey showed the biggest annual jump of all the ingredients for a Thanksgiving meal included in the survey.

“Most Americans will pay about the same as last year at the grocery store for a turkey and all the trimmings,” said John Anderson, A.F.B.F. deputy chief economist. “A slight increase in demand for turkey is responsible for the moderate price increase. Anyone with the patience to wait until the last minute to buy a turkey for Thanksgiving could be rewarded with an exceptional bargain.”

Items showing lower prices this year included a ½ pint of whipping cream at $1.83, down 13c; a 14-oz package of cube stuffing at 2.77, down 11c; 3 lbs of sweet potatoes at $3.15, down 11c; a gallon of whole milk at $3.59, down 7c; 12-oz of fresh cranberries at $2.45, down 3c; 1 lb of green peas at $1.66, down 2c; a 30-oz package of pumpkin pie mix at $3.02, down 1c; and two pie shells at $2.51, down 1c. The price for carrots and celery for a 1-lb relish tray was unchanged at 76c.

Showing higher prices this year were a 16-lb turkey at $22.23, up 66c from last year, miscellaneous ingredients, up 8c to $3.18 in 2012, and a dozen rolls, up 3c at $2.33, according to the A.F.B.F. survey.

The non-scientific survey, conducted by volunteer shoppers who are “asked to look for the best possible prices, without taking advantage of special promotional coupons or purchase deals,” the A.F.B.F. said.