| Conventional Long Name: | Taichung County |
| Common Name: | Taichung |
| Subdivision: | County |
| Nation: | the Republic of China |
| P1: | Taichū Prefecture |
| Flag P1: | Flag_of_Japan_(1870-1999).svg |
| S1: | Changhua County1950: Changhua County |
| Flag S1: | Flag of Changhua County.svg |
| S2: | Nantou County |
| Flag S2: | Flag of Nantou County.svg |
| S3: | Taichung2010: Taichung City |
| Flag S3: | Flag of Taichung City.svg |
| Image Map Caption: | Location of Taichung County on Taiwan. |
| Capital: | Yuanlin (1945–1950) Fongyuan (1950–2010) |
| Date Start: | 26 November |
| Year Start: | 1945 |
| Date End: | 25 December |
| Year End: | 2010 |
| Membership Title1: | Country |
| Membership1: | (1945–2010) (1945–1952, de jure) |
| Political Subdiv: | 3 County-administered cities 5 Urban townships 12 Rural townships 1 Mountain indigenous township |
| Today: | Part of the Taichung (Special municipality), Changhua County, Nantou County |
| T: | 臺中縣 or 台中縣 |
| S: | 台中县 |
| Hp: | Táizhōng Xiàn |
| W: | T'ai²-chung¹ Hsien⁴ |
| Poj: | Tâi-tiong-kōan |
| H: | Thòi-chûng Yen |
| First: | t |
Taichung County was a county in central Taiwan between 1945 and 2010. The county seat was in Yuanlin Township before 1950 and Fongyuan City after 1950.
Taichung County was established on 26 November 1945 on the territory of Taichū Prefecture (Japanese: 臺中州) shortly after the end of World War II. In the early years, Taichung County consists of most territory of Taichū Prefecture except the territory near cities of Taichū (Taichung) and Shōka (Changhua). The county is subdivide into districts (Chinese: 區), which is reformed from Japanese districts (Japanese: 郡). The districts are divided into townships.
| Districts in Taichū Prefecture | Districts in Taichung County | Notes | |||
|---|---|---|---|---|---|
| Toyohara | Feng-yüan | ||||
| Tōsei | Tung-shih | ||||
| Taikō | Ta-chia | ||||
| Daiton | Ta-t'un | ||||
| Shōka | Chang-hua | ||||
| Inrin | Yüan-lin | The county seat from 1945 to 1950 | |||
| Hokuto | Pei-tou | ||||
| Nantō | Nan-t'ou | ||||
| Takeyama | Chu-shan | ||||
| Nōkō | Neng-kao | ||||
| Niitaka | Hsin-kao | Renamed to Yü-shan District (Chinese: 玉山區) in 1948 | |||
| Chung-feng | Established in 1949, covers the mountain indigenous townships | ||||
The subdivisions of the County remained mostly stable between 1950 and 2010. However, some changed has also been made.
In 25 Dec 2010, The county was merged with Taichung City, all cities and townships became districts. On the eve of merging with Taichung City, the county consists of the following administrative divisions
| Type | Name | Chinese | Taiwanese | Hakka | Region | |
|---|---|---|---|---|---|---|
| Cities | Fengyuan (Fongyuan) | Hong-goân | Fûng-ngièn | Fongyuan | ||
| Dali | Tāi-lí | Thai-lî | Datun | |||
| Taiping | Thài-pêng | Thai-phìn | ||||
| Urban townships | Dajia | Tāi-kah | Thai-kap | Dajia | ||
| Qingshui (Cingshuei) | Chheng-chúi | Tshîn-súi | ||||
| Shalu | Soa-la̍k | Sâ-lu̍k | ||||
| Wuqi (Wuci) | Gō·-chhe | Ǹg-tshi | ||||
| Dongshi (Dongshih) | Tang-sì | Tûng-sṳ | Dongshih | |||
| Rural townships | Longjing | Liông-chéⁿ | Liùng-tsiáng | Dajia | ||
| Dadu | Tōa-tō͘ | Thai-tú | ||||
| Da'an (Da-an) | Tāi-an | Thai-ôn | ||||
| Waipu | Goā-po͘ | Ngoi-phû | ||||
| Houli | Aū-lí | Heu-lî | Fongyuan | |||
| Tanzi (Tanzih) | Thâm-chú | Thâm-tsṳ́ | ||||
| Daya | Tāi-ngé | Thai-ngâ | ||||
| Shengang | Sin-kóng | Sṳ̀n-kông | ||||
| Shigang (Shihgang) | Chio̍h-kng | Sa̍k-kóng | Dongshih | |||
| Xinshe (Sinshe) | Sin-siā | Sîn-sa | ||||
| Wufeng (Wufong) | Bū-hong | Vú-fûng | Datun | |||
| Wuri (Wurih) | O·-ji̍t | Vû-ngit | ||||
| Mountain indigenous township | Heping | Hô-pêng | Fò-phìn | Dongshih |