In 1890 the population of Central City was given as 467; in 1895, 594; in 1900, 623; and in 1905, 607.
Walker in 1895 had 485 people, 505 in 1900, and 571 in 1905.
In this connection it is of interest to note that in 1836 the population of Wisconsin Territory, of which Iowa was then a part, west of the Mississippi river was, Dubuque county 4,274, Des Moines county 6,257, or a total of 10,531.
A second census was taken in 1838, which showed that there were in sixteen counties organized from the original two counties a population of 22,859. Jones county had 241 people at this time, Cedar 557, Johnson 237, and Linn 205.
In the first constitutional convention, which met at Iowa City October 7, 1844, and adjourned November 1, 1844, this county was represented by Thomas J. McKean, Samuel W. Durham, L. M. Strong.
The constitution adopted by this convention was rejected by the people at an election held August 4, 1845, the vote being, for 7,235, against 7,656.
In the second constitutional convention, which met at Iowa City May 4, 1846, and adjourned May 19, the county was represented by Socrates H. Tryon.
At the election on August 3, 1846, this constitution was adopted by the people by a small majority. It was presented to congress in December, 1846, and on the 28th of the same month an act was passed for the admission of Iowa into the Union.
The third constitutional convention sat in Iowa City from January 19 to March 3, 1857, and adopted a constitution which was ratified by the people on August 3 following. In this convention Linn's representative was Hosea W. Gray.
In this county the vote on the constitution was 1,307 yes, 955 no. In the state the vote was, yes 40,000, no 38,681. The result shows the first sign of a change in the political sentiment in state and county. The republicans favored the constitution, and the democrats opposed it.