Locust Grove, Mahoning County, Ohio

{{Use American English|date=July 2025}}

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

{{Infobox settlement

|official_name = Locust Grove, Ohio

|settlement_type = Unincorporated community

|nickname =

|motto =

|image_skyline = Locust Grove Baptist Church.JPG

|imagesize =

|image_caption = Locust Grove Baptist Church

|image_flag =

|image_seal =

|pushpin_map = Ohio#USA

|pushpin_relief = yes

|pushpin_label = Locust Grove

|subdivision_type = Country

|subdivision_name = United States

|subdivision_type1 = State

|subdivision_name1 = Ohio

|subdivision_type2 = County

|subdivision_name2 = Mahoning

|subdivision_type3 = Township

|subdivision_name3 = Green

|government_footnotes =

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|timezone = Eastern (EST)

|utc_offset = -5

|timezone_DST = EDT

|utc_offset_DST = -4

|elevation_footnotes =

|elevation_m =

|elevation_ft = 1237

|coordinates = {{coord|40|56|38|N|80|45|50|W|region:US-OH|display=inline,title}}

|postal_code_type = ZIP Code

|postal_code = 44460 (Salem)

|area_code = 234/330

|blank_name = GNIS feature ID

|blank_info = 1042707{{cite gnis|1042707|Locust Grove}}

|blank1_name =

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}}

Locust Grove is an unincorporated community in Green Township, Mahoning County, Ohio, United States. Locust Grove is located on Ohio State Route 165, {{convert|12.3|mi|km}} south-southwest of Youngstown.