On 12 July 1929, governorates and uyezds were abolished, and Nelidovsky District with the administrative center in the settlement of Nelidovo was established. It belonged to Rzhev Okrug of Western Oblast.[12][13] On August 1, 1930, the okrugs were abolished, and the districts were subordinated directly to the oblast. On 29 January 1935 Kalinin Oblast was established, and Nelidovsky District was transferred to Kalinin Oblast.[12][14] During World War II, in 1941–1942, Nelidovo was occupied by German troops. On August 22, 1944, the district was transferred to newly established Velikiye Luki Oblast. Nelidovo was granted town status in 1949.[11]
On October 2, 1957, Velikiye Luki Oblast was abolished, and Nelidovsky District was transferred back to Kalinin Oblast. In 1990, Kalinin Oblast was renamed Tver Oblast.[13]
Originally, Nelidovo was built to serve lignite deposits. The lignite mines are still active. Additionally, there are enterprises of timber, textile, and chemical industries in Nelidovo.[15][16]
The railway which connects Moscow and Riga via Rzhev, crosses the district from east to west. There is passenger railway traffic.
The M9 highway connecting Moscow with Riga passes just north of Nelidovo. Another paved road connects Nelidovo with Dukhovshchina via Bely. There are also local roads with bus traffic originating from Nelidovo.
^ abcdLaw #34-ZO stipulates that the borders of the settlements (administrative-territorial divisions) are identical to the borders of the urban and rural settlements (municipal divisions), and that the borders of the administrative districts are identical to the borders of the municipal districts. Law #38-ZO, which describes the borders and the composition of the municipal formations in Nelidovsky Municipal District, lists the town of Nelidovo as a part and the administrative center of Nelidovo Urban Settlement of that district.
^ abВоробьёв, М. В. (1993). Г. В. Туфанова (ed.). Административно-территориальное деление Смоленской области (in Russian). Государственный архив Смоленской области. pp. 118–133.
Законодательное Собрание Тверской области. Закон №34-ЗО от 17 апреля 2006 г. «Об административно-территориальном устройстве Тверской области», в ред. Закона №66-ЗО от 1 октября 2014 г. «О внесении изменения в статью 18 Закона Тверской области "Об административно-территориальном устройстве Тверской области"». Вступил в силу со дня официального опубликования. Опубликован: "Тверские ведомости", №17 (специальный выпуск), 19 апреля 2006 г. (Legislative Assembly of Tver Oblast. Law #34-ZO of April 17, 2006 On the Administrative-Territorial Structure of Tver Oblast, as amended by the Law #66-ZO of October 1, 2014 On Amending Article 18 of the Law of Tver Oblast "On the Administrative-Territorial Structure of Tver Oblast". Effective as of the official publication date.).
Законодательное Собрание Тверской области. Закон №32-ЗО от 28 февраля 2005 г. «Об установлении границ муниципальных образований, входящих в состав территории муниципального образования Тверской области "Краснохолмский район", и наделении их статусом городского, сельского поселения», в ред. Закона №33-ЗО от 30 мая 2013 г. «О представительных органах и главах вновь образованных муниципальных образований Тверской области и о внесении изменений в отдельные Законы Тверской области». Вступил в силу со дня официального опубликования. Опубликован: "Тверские ведомости", №10, 11–17 марта 2005 г. (Legislative Assembly of Tver Oblast. Law #32-ZO of February 28, 2005 On Establishing the Borders of the Municipal Formations Comprised by the Territory of the Municipal Formation of "Krasnokholmsky District" and on Granting Them the Status of Urban, Rural Settlements, as amended by the Law #33-ZO of May 30, 2013 On the Representative Bodies and Heads of Newly Established Municipal Formations of Tver Oblast an on Amending Various Laws of Tver Oblast. Effective as of the day of the official publication.).
Законодательное Собрание Тверской области. Закон №4-ЗО от 18 января 2005 г. «Об установлении границ муниципальных образований Тверской области и наделении их статусом городских округов, муниципальных районов», в ред. Закона №65-ЗО от 24 июля 2012 г. «О внесении изменения в статью 2 Закона Тверской области "Об установлении границ муниципальных образований Тверской области и наделении их статусом городских округов, муниципальных районов"». Вступил в силу через десять дней после официального опубликования. Опубликован: "Тверские ведомости", №3, 21–27 января 2005 г. (Legislative Assembly of Tver Oblast. Law #4-ZO of January 18, 2005 On Establishing the Borders of the Municipal Formations of Tver Oblast and on Granting Them the Status of Urban Okrugs, Municipal Districts, as amended by the Law #65-ZO of July 24, 2012 On Amending Article 2 of the Law of Tver Oblast "On Establishing the Borders of the Municipal Formations of Tver Oblast and on Granting Them the Status of Urban Okrugs, Municipal Districts". Effective as of the day which is ten days after the official publication.).