Unionville, Massac County, Illinois

{{Use mdy dates|date=July 2023}}

{{Infobox settlement

|official_name = Unionville, Illinois

|settlement_type = Unincorporated community

|nickname =

|motto =

|image_skyline = Unionville, Massac County.jpg

|imagesize = 250px

|image_caption = Houses on Mount Sterling Road

|image_flag =

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|pushpin_map = Illinois#USA

|pushpin_label = Unionville

|pushpin_label_position =

|subdivision_type = Country

|subdivision_name = United States

|subdivision_type1 = State

|subdivision_name1 = Illinois

|subdivision_type2 = County

|subdivision_name2 = Massac

|government_footnotes =

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|timezone = Central (CST)

|utc_offset = -6

|timezone_DST = CDT

|utc_offset_DST = -5

|elevation_footnotes =

|elevation_m =

|elevation_ft = 371

|coordinates = {{coord|37|07|20|N|88|32|48|W|region:US-IL|display=inline,title}}

|postal_code_type =

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|area_code = 618

|blank_name = GNIS feature ID

|blank_info = 420146{{gnis|420146}}

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}}

Unionville is an unincorporated community in Massac County, Illinois, United States. Unionville is {{convert|4.5|mi|km}} east of Brookport.