The following is a summary of acts which authorized boundary changes for Cannon County.
- Acts of 1841-42, Chapter 85, changed the lines between Cannon and Rutherford Counties as "beginning at a point in the present line, south of the twelve mile tree and due west of the house of Absalom Bowen, then west to the top of Cripple Creek ridge, thence along the ridge until it intersects the present line and that of the territory lying east of the said line, including the residence of Harold Laseter, so that all this area be attached to Cannon County.
- Acts of 1841-42, Chapter 90, changed the boundaries between Cannon and Wilson and Cannon and DeKalb Counties. The Act placed the property of Samuel Greer in Cannon County from Wilson County, and then the properties of John Sneed from Wilson County into Cannon County and then this area "thence down Smith's Fork to the Dekalb County line, thence with the said line to the line of Cannon County is established as the same between the counties but Wilson County shall not be reduced below the Constitutional limits."
- Acts of 1843-44, Chapter 57, transferred the dwelling house and lot belonging to Alfred Hancock out of DeKalb County into Cannon County.
- Acts of 1846, Chapter 211, Section 8, changed the county line between Cannon and Coffee Counties to include the lands of John Banks, Stith Hays, and Samual Spangle, in Cannon County.
- Acts of 1849-50, Chapter 62,Section 30, authorized the official Surveyor of Coffee County to run and mark the line between Coffee and Cannon Counties at the expense of Coffee County.
- Acts of 1851-52, Chapter 20, moved the campground known as Mount Pisgah out of Rutherford County and into Cannon County.
- Acts of 1851-52, Chapter 304, Section 2, changed the lines between Cannon and DeKalb Counties so as to include the farm and residence of John Martin, Junior, in DeKalb County, and he shall be entitled to all the rights and privileges as other citizens. This Act was repealed by Chapter 152, Acts of 1853-54, below.
- Acts of 1853-54, Chapter 108, moved all the land belonging to John H. Wood which was lying in Rutherford County into Cannon County and all the lands lying in Cannon County which belonged to John D. Alexander and Lewis Creson into Rutherford County.
- Acts of 1853-54, Chapter 118, transferred the portions of land lying in Cannon County which belonged to Thomas Martin and the Widow Kersey into DeKalb County.
- Acts of 1853-54, Chapter 152, expressly repealed Chapter 304, Acts of 1851-52, Item 6, above, which related to DeKalb and Cannon Counties so that those boundary lines are restored to their places before the passage of that Act. This Act was repealed by the one below which would presumably restore Chapter 304.
- Acts of 1855-56, Chapter 27, specifically repealed that Section of Chapter 152, Acts of 1853-54, which repealed part of Chapter 304, Acts of 1851-52 both above.
- Acts of 1857-58, Chapter 47, Section 6, moved the residence and land of James King out of Wilson County and into Cannon County.
- Acts of 1859-60, Chapter 100, Section 10, provided that the portion of the farm belonging to Charles Hutchison which was located in DeKalb County be removed and attached to Cannon County.
- Acts of 1859-60, Chapter 196, Section 10, changed the line between DeKalb and Cannon Counties as follows "beginning at the branch at Derby Mill, running up the branch to the Woodbury road near the campground spring and thence east with the main road to the county line." This Act was repealed by Chapter 118, Acts of 1870.
- Acts of 1867-68, Chapter 12, moved the lands belonging to James Sheshane, George W. Derlong, John Derling, James Anderson, and Hiram Morris out of DeKalb County and into Cannon County.
- Acts of 1867-68, Chapter 60, Section 12, transferred the S. H. Ford tract of land, now owned by A. F. McFerrin, out of Coffee County and into Cannon County.
- Acts of 1870, Chapter 118, repealed the 10th Section of Chapter 196, Acts of 1859-60, Item 13, above, which took a described portion of Cannon County and gave it to DeKalb County so that the area is now returned to Cannon County and the boundary lines will resume their former positions.
- Acts of 1870-71, Chapter 18, Section 3, altered the lines between Coffee County and Cannon County so that all the lands belonging to Newton Jarnagin are included in Coffee County, "commencing in said Jarnagins south boundary line where it crosses the line between the Counties of Coffee and Cannon, thence east to this southeast corner, thence north with his line to the northwest corner, thence west to the County line."
- Acts of 1870-71, Chapter 117, changed the lines between Cannon and Rutherford Counties at a point a short distance south of Readyville so as to include in Cannon County about 50 acres of land belonging to John H. Wood, beginning at the line between John H. Wood and J. L. Dunn.
- Acts of 1879, Chapter 57, Section 3, changed the boundaries between Cannon and Rutherford Counties so that all the lands of A. M. McNight would be included in Rutherford County.
- Acts of 1883, Chapter 203, repealed Section 4, Chapter 18, Acts of 1870-71, which Section concerned only Wilson and Rutherford Counties and did not involve the Section referring to Cannon County.
- Acts of 1887, Chapter 228, moved seventeen acres of land belonging to J. C. Jones, out of DeKalb County and joined them with the other 42 acres belonging to Jones in Cannon County.
- Acts of 1889, Chapter 55, detached the lands of R. A. Hancock and J. R. Dougherty from Wilson County, and attached the same to Cannon County.
- Acts of 1889, Chapter 57, rearranged the boundary lines between Cannon County and Warren County so that the land belonging to Warren Cummings, known as the Gordon Farm, would be wholly included in Cannon County. This Act was repealed by Chapter 305, Acts of 1899.
- Acts of 1891, Chapter 254, detached a portion of land from Rutherford County containing about one acre and ten poles which ran through the center of the Porterfield School room and attached it to Cannon County.
- Acts of 1893, Chapter 58, transferred the land commencing at the northwest corner of Needham Jernigan's lands in Coffee County; thence west with Leroy and William Talbert's lands in Cannon County; to G. P. Burk's lands in Coffee County, so as to include the "Hill Farm" on which A. J. Hill now lives, and also the lands of James Whittamore within the limits of Coffee County.
- Acts of 1899, Chapter 305, repealed Chapter 57, Acts of 1889, Item 23, above, so that the old Gordon Farm was returned to Warren County.
- Acts of 1899, Chapter 316, moved the lands of Dr. Z. F. Dismukes out of Cannon County and into Rutherford County.
- Acts of 1903, Chapter 213, changed the lines between DeKalb and Cannon Counties so as to wholly include in Cannon County all the lands of E. T. Haley, Mrs. M. J. Turner, W. J. Vandergraft, George Hancock, James Kirby, J. D. Vandergraft, and W. R. Watson.
- Acts of 1903, Chapter 387, is the same as the above Act except Vandergraft is spelled Vandergroft.
- Acts of 1903, Chapter 582, detached all the properties of B. F. Hall from Cannon County and attached them to DeKalb County.
- Acts of 1903, Chapter 598, moved all the lands owned by J. I. Hoover, Sanday Biles, Park Biles, and Andy McGill which were in the 13th Civil District of Cannon County into the 2nd Civil District of Coffee County.
- Acts of 1905, Chapter 35, changed the lines between Cannon and Wilson Counties so as to include wholly within Cannon County all the lands owned by J. B. Smithson.
- Acts of 1905, Chapter 222, detached all the lands belonging to Henry Thomas, T. L. McMillen, and Marguerite Tenpenny from Wilson County and attached them to Cannon.
- Acts of 1909, Chapter 454, moved the property of John M. Kennedy out of Wilson County and into Cannon County.
- Acts of 1909, Chapter 455, transferred the land owned by Mrs. Betty Grooms out of the 14th Civil District of Wilson County and into Cannon County.
- Private Acts of 1913, Chapter 255, changed the south line of Cannon County and the north line of Coffee County so as to include the lands of C. F. Holt in Cannon County.
- Private Acts of 1915, Chapter 444, moved all the lands of R. E. Summers out of the Fifth Civil District of Cannon County and into the Eleventh Civil District of Warren County.
- Private Acts of 1915, Chapter 556, detached the land which John Sadler purchased from Will Hancock in the 10th Civil District of Cannon County and attached it to the 3rd Civil District of DeKalb County.
- Private Acts of 1915, Chapter 660, altered the boundaries between Coffee and Cannon Counties so as to include all the lands of C. F. Holt in Cannon County.
- Private Acts of 1915, Chapter 662, detached the lands of A. J. Smithson from the 3rd Civil District of DeKalb County and attached the same to Cannon County.
- Private Acts of 1925, Chapter 712, rearranged the boundaries between Cannon and Rutherford Counties so as to include all the lands of Jim Williams in Rutherford County.
- Private Acts of 1925, Chapter 713, transferred the land owned by J. L. Barker, and known as the Flint Spear farm in Cannon County, bounded on the north by Jim Williams, or public road, on east by C. O. Barker and Jim Hollis, or public road; on the south by George Lassiter; and on the west by J. L. Barker, out of Cannon and into Rutherford County.
- Private Acts of 1925, Chapter 756, changed the lines between Cannon and Warren so as to place that portion of the lands of F. M. Holder in the 9th Civil District of Cannon County into the 12th Civil District of Warren County.
- Private Acts of 1929, Chapter 147, took the lands of E. A. Simpson, known as the Couch and Truett lands, out of Warren County and placed them in the 11th Civil District of Cannon County.
- Private Acts of 1933, Chapter 270, transferred from DeKalb County a tract of land owned by A. J. Smithson, containing 30 acres, more or less, lying in the 3rd Civil District, and being a part of the land purchased by Smithson from Claude Lafevers, and reserved by Smithson to one Clifton Hall, and placed it in Cannon County.
- Private Acts of 1933, Chapter 271, detached from Coffee County and attached to Cannon County the farm of T. J. Banks, lying in the 10th Civil District of Coffee County. This farm is the tract of land purchased by the said Banks from one Williams Ault, known as the Brewer Farm, containing 75 acres, more or less.
- Private Acts of 1939, Chapter 524, moved the farm of James Underhill, containing 65 acres and located in the 5th Civil District of DeKalb County, out of DeKalb County and into the 9th Civil District of Cannon County.
- Private Acts of 1941, Chapter 435 rearranged the lines between Cannon and Warren Counties so that about 45 acres belonging to Thelia Cotton, located in the 11th Civil District of Cannon County, would be wholly included within the 9th Civil District of Warren.
- Private Acts of 1943, Chapter 266, detached from Warren County and attached to Cannon County a body of land known as the R. E. Summer's Farm, containing 250 acres, more or less, lying in the 11th Civil District, now owned in three tracts by Alonzo Hayes, Lilburn Todd, and Stanley Lewis. This Act repealed Chapter 444, Private Acts of 1915, Item 37, above, which reversed this process.
- Private Acts of 1943, Chapter 390, moved the farm and residence of F. F. Craig out of Cannon County and into the 19th Civil District of Rutherford County.
- Private Acts of 1949, Chapter 813, stated that the tract of land belong to O. E.Tassey, consisting of 37 acres, situated in the 16th Civil District of Rutherford County is hereby detached from Rutherford County and attached to the 1st Civil District of Cannon County.
- Private Act of 1953, Chapter 573, changed the boundaries so as to take from the 11th Civil District of Warren County and place in the 8th Civil District of Cannon county a tract of land owned by John Burger.
- Private Acts of 1963, Chapter 103, detached the lands of Marshall Smith, and wife, Beulah Smith, from the 11th Civil District of Warren County and makes them a part of the 8th Civil District of Cannon County, describing the land by a metes and bounds description taken from a warranty deed executed by Walter M. Barrett, and wife, Nancy, recorded in Book 140, Page 588, R.O.W.C. This Act did not require local ratification.
- Private Acts of 1971, Chapter 65, moved that portion of the 40 acre tract of land owned by Vennie Snyder, now situated in the 9th Civil District of Cannon County from Cannon County and placed it in the 5th Civil District of DeKalb County, same being generally described in the Act.
- Public Acts of 1972, Chapter 548, moved the land back from DeKalb County into Cannon County belonging to Vennie Snyder, listed above.
- Public Acts of 1975, Chapter 161, transferred the lands belonging to Vennie H. Snyder out the of Ninth Civil District of Cannon County and into the Fifth Civil District of DeKalb County, which lands were bounded on the north by the lands of Monte Otis Hale; on the south by the lands of Larry Cantrell; on the east by Monte Otis Hale and State Highway #146; and on the west by Larry Cantrell, containing 15 acres, more or less. This Act was repealed by the one following.
- Public Acts of 1976, Chapter 422, expressly and entirely repealed Chapter 161, Public Acts of 1975, Item 56, above, which would again place the Snyder property in Cannon County.
- Public Acts of 1976, Chapter 487, moved about ten acres of land, more or less, owned by Mr. and Mrs. Willie Curtis, out of the Fifth Civil District of DeKalb County and into the Ninth Civil District of Cannon County which action would place all the Curtis Property in Cannon County.
- Public Acts of 1981, Chapter 81, altered the boundary line between Cannon County and DeKalb County be detaching approximately one acre of ground as described, from the Second Civil District of DeKalb County and attaching the same to the Fourth Civil District of Cannon County.