Presiding Commissioner Leo Warren said the books cost $25 each. New large plat maps are in and they are also available at $35 each.
Warren said the plat books are re-done every three or four years.
"This is the most accurate plat book our county has ever had made," Warren said.
The book is full of information regarding the county and lists all property owners who own 20 acres or more of land.
There is a key map of the county and a map legend on the inside cover of the book.
A list of all churches and cemeteries can be found on page one.
Warren said most readers will find the Oregon County statistics interesting.
"We currently have a population of 10,344 people. We are listed by the state as a third class county with an assessed valuation of $76,264,883," he said.
There are 792 square miles in the county and the plat book says the county was organized on Feb. 14, 1845, and named after the Oregon Territory.
All of the school districts in the county are shown by map and lists all the school superintendents and how they can be reached.
All of the fire districts are also shown by a map and the respective fire chiefs and their fire numbers are on page four of the plat book.
"There are several different points of intereste included in this year's plat book," Warren said. Some of those include: The Irish Wilderness, Grand Gulf State Park, Greer Spring and Trail, Boze Mill, Turner's Mill, The Narrows, McCormack Lake and Recreation Area, The Eleven Point River and Falling Spring.
All county elected office holders are pictured in the book as well as their telephone numbers. State elected officials' telephone numbers are also in the book
The city directories of Thayer, Thayer Special Road District, Koshkonong and Alton are all included in the new plat books.
"We had more advertising than ever before," Warren said. He added that he thanks all the businesses that advertised in the book because it helped keep the cost of the book low.
The book concludes with a business directory of many local businesses of interest to new and old residents of the county.
The back cover of the book shows the Oregon County Flag and the history of the flag. It was adopted by the Oregon County Commission as a Bi-Centennial project in 1976. The flag was designed by Anita Caldwell of Thayer who was the winner of a contest seeking flag ideas.
When Oregon County was formed in February of 1845 there were 26 states in the union and Oregon County was the 76th county to be formed. That is the reason for the 26 stars and the 76 in the middle of the circle of the flag.
Warren said for more information about the plat book call his office Monday or Friday at 417-778-7475.