Mill Creek 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 Lincoln Township

Lincoln Township, LaPorte County, Indiana

Lincoln Township is one of twenty-one townships in LaPorte County, Indiana. As of the 2000 census, its population was 1,835.-External links:* *...

, LaPorte County

LaPorte County, Indiana

LaPorte County is a county located in the U.S. state of Indiana. As of 2010, the population was 111,467. The county seat is the city of La Porte. This county is part of the Chicago metropolitan area, Northwest Indiana and Michiana. The largest city is Michigan City...

, 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 CR875E east of the city of La Porte, 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 LaPorte County. Although Mill Creek 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 46365. It is possible to reach Mill Creek from Upper Fish Lake by way of a shallow stream that feeds the lake: this stream passes under a railroad bridge about a half mile east of the town.