Colo. Rev. Stat. § 30-5-169
So much of the counties of El Paso and Fremont as is included within the following described boundaries shall be set apart and is hereby established as a county, to be called the county of Teller:
Beginning at the northeast corner of Fremont county at the intersection of the line between ranges sixty-seven and sixty-eight west of the sixth principal meridian, with the line between townships fifteen and sixteen south; thence north on the line between ranges sixty-seven and sixty-eight, seven miles, more or less, to the corner common to sections thirty and thirty-one, township fourteen south, range sixty-seven west, and sections twenty-five and thirty-six, township fourteen south of range sixty-eight west; thence westerly along section lines seven miles, more or less, to the corner common to sections twenty-five, twenty-six, thirty-five and thirty-six, in township fourteen south, range sixty-nine west; thence north on section lines, five miles, more or less, to the corner common to sections one and two, township fourteen south, range sixty-nine west, and sections thirty-five and thirty-six, township thirteen south, range sixty-nine west; thence east two miles along township line to corner common to sections five and six, township fourteen south, range sixty-eight west, and sections thirty-one and thirty-two, township thirteen south, range sixty-eight west; thence north along section lines eighteen miles, more or less, to the north section corner common to sections five and six, township eleven south, range sixty-eight west; thence west along the south boundary line of Douglas county sixteen miles, more or less, to the northwest corner of section three, township eleven south, range seventy-one west, being a point in the easterly boundary line of the county of Park; thence south along the easterly boundary line of Park county thirty miles, more or less, to the line between townships fifteen and sixteen south, being a point on the north boundary line of the county of Fremont; thence east along the north boundary line of Fremont county five miles, more or less, to the northeast corner of section five, township sixteen south, range seventy west; thence south along section lines three miles, more or less, to the corner common to sections sixteen and seventeen, twenty and twenty-one of township sixteen south of range seventy west; thence east along section lines, sixteen miles, more or less, to line between ranges sixty-seven and sixty-eight west; thence north on said range line, three miles, more or less, to the place of beginning.
C.R.S. § 30-5-169