Dayville (CDP), Connecticut

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

{{Infobox settlement

|official_name = Dayville, Connecticut

|settlement_type = Census-designated place

|image_skyline = St Josephs Church, Dayville CT.jpg

|imagesize =

|image_caption = St. Joseph's Church

|pushpin_map = Connecticut#USA

|pushpin_label = Dayville

|pushpin_label_position =

|pushpin_map_caption =

|coordinates = {{coord|41|50|45|N|71|53|16|W|region:US-CT|display=inline,title}}

|subdivision_type = Country

|subdivision_name = {{US}}

|subdivision_type1 = State

|subdivision_name1 = Connecticut

|subdivision_type2 = County

|subdivision_name2 = Windham

|subdivision_type3 = Town

|subdivision_name3 = Killingly

|established_title =

|established_date =

| area_footnotes = {{cite web |title=2020 U.S. Gazetteer Files – Connecticut |url=https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2020_Gazetteer/2020_gaz_place_09.txt |publisher=United States Census Bureau |access-date=April 16, 2021}}

| area_total_sq_mi =

| area_land_sq_mi =

| area_water_sq_mi =

| area_total_km2 = 2.41

| area_land_km2 = 2.41

| area_water_km2 = 0.0

| area_water_percent =

| population_as_of = 2020

| population_footnotes =

| population_density_km2 =

|timezone = Eastern (EST)

|utc_offset = -5

|timezone_DST = EDT

|utc_offset_DST = -4

|elevation_footnotes =

|elevation_m =

|elevation_ft = 245

|postal_code_type = ZIP Code

|postal_code = 06241

|area_code = 860/959

|blank_name = FIPS code

|blank_info = 09-18990

|blank1_name = GNIS feature ID

|blank1_info = 2805988{{Cite gnis|2805988|Dayville Census Designated Place}}

|website =

|footnotes =

}}

Dayville is a census-designated place (CDP) in the northeast part of the town of Killingly in Windham County, Connecticut, United States. It is located on the east side of the Fivemile River, {{convert|5|mi|0}} north of Danielson. Interstate 395 passes through the east side of the CDP, leading south to Norwich and north to Auburn, Massachusetts.

Dayville was first listed as a CDP prior to the 2020 census.

The Dayville Historic District occupies {{convert|15|acre}} at the center of the village.