{{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<ref name="nris">{{NRISref|2009a}}</ref> }}'''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.<ref name=nrhpdoc>{{cite report|type=none|url=https://catalog.archives.gov/id/75318249 |title=National Register of Historic Places Registration: New York SP Jefferson County Courthouse Complex|publisher=National Archives and Records Administration |author= C. E. Brooke|date= November 1973| access-date=November 1, 2025 }} ({{NationalArchivesNote}})</ref>
It was listed on the National Register of Historic Places in 1974.<ref name="nris"/>
== Gallery == <gallery> File:Jefferson County Courthouse Complex.jpg|Jefferson County Courthouse Complex File:Jefferson County Courthouse Complex vertical.jpg|Jefferson County Courthouse Complex </gallery>
==References== {{reflist}}
==External links== {{Commons category|Jefferson County Courthouse Complex}} *{{HABS |survey=NY-5438 |id=ny0240 |title=Old Jefferson County Courthouse, Arsenal & Sherman Streets, Watertown, Jefferson County, NY |photos=5 |cap=1}}
{{National Register of Historic Places in New York}}
Category:Courthouses on the National Register of Historic Places in New York (state) Category:Historic American Buildings Survey in New York (state) Category:Historic districts on the National Register of Historic Places in New York (state) Category:County courthouses in New York (state) Category:1862 establishments in New York (state) Category:National Register of Historic Places in Watertown, New York
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