St. Croix is an unincorporated community

Unincorporated area

In law, an unincorporated area is a region of land that is not a part of any municipality.To "incorporate" in this context means to form a municipal corporation, a city, town, or village with its own government. An unincorporated community is usually not subject to or taxed by a municipal government...

 in northern Oil Township

Oil Township, Perry County, Indiana

Oil Township is one of seven townships in Perry County, Indiana, USA. As of the 2000 census, its population was 2,032.-Geography:According to the United States Census Bureau, Oil Township covers an area of ; of this, is land and is water.-Unincorporated towns:* Apalona at * Bandon at *...

, Perry County

Perry County, Indiana

Perry County is a county located in the southwestern part of the U.S. state of Indiana. As of 2010, the population was 19,338. The county seat is Tell City. It is the hilliest county as well as one of the most forested counties of in Indiana as it features more than of Hoosier National Forest...

, Indiana

Indiana

Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It lies along State Road 62

Indiana State Road 62

State Road 62 in the U.S. State of Indiana is an east–west route that runs from the Illinois state line in the southwest corner of Indiana to the Louisville, Kentucky area, then northeast toward the Cincinnati, Ohio area.-Route description:...

 near its intersection with Interstate 64

Interstate 64

Interstate 64 is an Interstate Highway in the Midwestern and Southeastern United States. Its western terminus is at I-70, U.S. 40, and U.S. 61 in Wentzville, Missouri. Its eastern terminus is at an interchange with I-264 and I-664 at Bowers Hill in Chesapeake, Virginia. As I-64 is concurrent with...

 and State Road 37

Indiana State Road 37

State Road 37 in the U.S. State of Indiana is a major route in Indiana, running as a 4-lane divided highway for 110 miles of its course....

, northeast of the city of Tell City

Tell City, Indiana

Tell City is a city in Troy Township, Perry County, Indiana, along the Ohio River, Indiana's southern border. The population was 7,272 at the 2010 census. The city is the county seat of Perry County.-History:...

, the county seat

County seat

A county seat is an administrative center, or seat of government, for a county or civil parish. The term is primarily used in the United States....

 of Perry County. Its elevation is 725 feet (221 m), and it is located at 38°13′26"N 86°35′11"W (38.2239489, -86.5863736). Although St. Croix is unincorporated, it has a post office

Post office

A post office is a facility forming part of a postal system for the posting, receipt, sorting, handling, transmission or delivery of mail.Post offices offer mail-related services such as post office boxes, postage and packaging supplies...

, with the ZIP code

ZIP Code

ZIP codes are a system of postal codes used by the United States Postal Service since 1963. The term ZIP, an acronym for Zone Improvement Plan, is properly written in capital letters and was chosen to suggest that the mail travels more efficiently, and therefore more quickly, when senders use the...

of 47576.

Most of the original settlers of St. Croix were French and Irish immigrants.

Professional comedian/actor John Caponera's grandfather James "Red" Cassidy was born in St Croix, IN.