Indianapolis i would recommend.
Huge population of young generation people that live in the city.
The top 2 demographic groups in Indy are the Baby Boomers and the Young Generation.
2nd its only a 1.5 hour drive from Cincy and a 3 hour drive to Chicago.
Plus it has the nations most affordable housing market and lowest cost of living.
Also its the fastest growing city/metro in the midwest and has the strongest economy in the midwest aside from Minneapolis.
Indiana also has a balanced budget with 1% capped property taxes and a 3.4% flat rate income tax and 7% sales.
Indiana/Indy are also conservative which would fit your taste. The state also has a large christain population. Especially around Indianapolis.
Also Indy is a very clean green city with one of the largest urban parks in the US. Eagle Creek and White River State park. Plenty of new trails are being built around the city for hiking and biking.
Finally Indianapolis is ranked as a top city to raise a family by forbes.com and many other sources. We have the worlds largest Childrens Museum and a wonderful sports scene for families
the NCAA is also headquartered in Indy and the city has a contract to host the NCAA men and womens final four every 5 years. The Suburb of Fishers is the safest city in the United States according to QA crime rankings.