The City of Ithaca is the county seat of Gratiot County

We are located on U.S. 127, one of the major transportation arteries of the state of Michigan. The freeway provides fast and convenient transportation to all major metropolitan areas in the state. Ithaca is a short drive from Lansing, Grand Rapids, Midland and Mt. Pleasant.

Ithaca is surrounded by Michigan's richest farm land. Agriculture is a major economic factor in Gratiot County. One of Michigan's largest vegetable farms is situated less than a mile from Ithaca. The United States Department of Agriculture maintains offices in Ithaca. Agricultural research and advanced manufacturing are growing in Ithaca and the surrounding area.

The topography of the Ithaca area is flat land surrounded by fertile farmland. The area enjoys a moderate climate. January is the coldest month, with an average low temperature of 13 degrees, and the warmest month is July with an average high temperature of 83 degrees. The average precipitation is 32.5 inches.

As of the American Community Survey 2018, there were 2,805 people, 1,079 households, and 753 families residing in the city. The population density was 536.33 per square mile (1389.1 km²). There were 1,177 housing units 225.05 per square mile (582.87 km²).

There were 1,079 households. The average household size was 2.50 and the average family size was 3.00.

In the city the population was spread out with 29.7% under the age of 20, 18% from 20 to 34, 11.5% from 35 to 44, 25% from 45 to 64, and 15.8% who were 65 years of age or older. The median age was 36.7 years.

The median income for a household in the city was $44,922, and the median family income was $55,491.  Per capita income was $21,587.