Jefferson County Courthouse Complex

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

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

{{Infobox NRHP

| name = Jefferson County Courthouse Complex

| nrhp_type = hd

| nocat = yes

| image = Old Jefferson County Courthouse, Arsenal & Sherman Streets, Watertown (Jefferson County, New York).jpg

| caption = Old Jefferson County Courthouse, October 1966

| location = SE corner of Arsenal and Sherman Sts., Watertown, New York

| coordinates = {{coord|43|58|31|N|75|54|51|W|region:US_type:landmark|display=inline,title}}

| locmapin = New York#USA

| mapframe = yes

| mapframe-marker = building

| mapframe-zoom = 12

| mapframe-caption = Interactive map showing the location for Jefferson County Courthouse Complex

| built = 1862

| architect = White, Horatio Nelson; Kieff & Hose

| architecture =

| added = June 07, 1974

| area = {{convert|2|acre}}

| refnum = 74001248{{NRISref|2009a}}

}}Jefferson County Courthouse Complex is a courthouse complex and national historic district located at Watertown in Jefferson County, New York. The district includes three contributing buildings; the courthouse building (1862), Clerk's Office (1883–1884) and Surrogate's Office (1905). The courthouse building is a two-story, red brick structure with limestone trim. It features a three-story tower on the northwest corner. It was designed by architect Horatio Nelson White.{{cite web|url=http://www.oprhp.state.ny.us/hpimaging/hp_view.asp?GroupView=2967|title=National Register of Historic Places Registration: Jefferson County Courthouse Complex|date=November 1973|accessdate=2009-12-10|author=C. E. Brooke|publisher=New York State Office of Parks, Recreation and Historic Preservation|archive-date=October 1, 2012|archive-url=https://web.archive.org/web/20121001235128/http://www.oprhp.state.ny.us/hpimaging/hp_view.asp?GroupView=2967|url-status=dead}} See also: {{cite web|url=http://www.oprhp.state.ny.us/hpimaging/hp_view.asp?GroupView=2969|title=Accompanying two photos|access-date=December 12, 2009|archive-date=October 1, 2012|archive-url=https://web.archive.org/web/20121001235225/http://www.oprhp.state.ny.us/hpimaging/hp_view.asp?GroupView=2969|url-status=dead}}

It was listed on the National Register of Historic Places in 1974.