South West CDC Marsiling-Yew Tee GRC Choa Chu Kang (local pronunciation: /ˌtʃwɑː ˌtʃuː ˈkɑːŋ/[a]), alternatively spelled Chua Chu Kang and often abbreviated as CCK, is a planning area and residential town located at the northwestern point of the West Region of Singapore.

The new town era evolved in 1985 when Teck Whye was developed (the first HDB blocks since 1977), and it was extended to four neighbourhoods by 1992 with the truncation of Choa Chu Kang Road.

Yew Tee was developed in 1997 as the three northern neighbourhoods of Choa Chu Kang, north of the Kranji Expressway.

Choa Chu Kang's eighth neighbourhood, Keat Hong, bound to the south by Brickland Road, was developed in 2015.

There is a higher population concentration among younger and middle-aged groups, with males and females both peaking at the 25-29 age range at 4.40% and 4.15% respectively.

[13] Compared to the national average of 15.59%, there is a substantially higher proportion of residents practising Islam in Choa Chu Kang.

[13] 41,019 residents (27.6% of the population) in Choa Chu Kang have attained a university qualification, lower than the national average of 32.1%, ranking the fifth lowest among all planning areas in Singapore.

[13] In Choa Chu Kang, the proportion of residents using English as the most frequently spoken language, 45.41%, is slightly lower than the national average of 48.25%.

[13] According to the 2020 Census of Population, 111,120 residents aged 15 years and over in Choa Chu Kang are employed, out of the 117,517 in the labour force.

[13] Among the employed residents in Choa Chu Kang aged 15 years and over, most earn a gross monthly income of between S$3,000 and S$3,999, with 13.1% being in that category.

[13] When Choa Chu Kang Town was developed by expanding Teck Whye Estate near the other end of Choa Chu Kang Road at its junction with Upper Bukit Timah Road and Woodlands Road to the north, the place name began to be applied to a much larger area, especially when political divisions like the Choa Chu Kang ward applied to the entire northwest sector of the country during some editions of the Parliamentary elections.

Today, the Yew Tee and Limbang wards fall within the Marsiling-Yew Tee Group Representation Constituency and the rest of the town such as Keat Hong and Choa Chu Kang fall within the Chua Chu Kang Group Representation Constituency.

The government of Singapore ideally desires environmental towns, using public transport to reduce pollution caused by heavy road traffic.

As Choa Chu Kang is relatively distant from the city centre at the Central Area, an efficient, high-volume and high-speed public transport system is also preferred over road networks.

It usually takes an hour for passengers to travel from Choa Chu Kang to the Central Area which changes at Jurong East.

Yew Tee station (NS5), the other station along NSL in Choa Chu Kang New Town, serves the housing developments in Yew Tee, the industrial estate of Sungei Kadut, and the northern part of Choa Chu Kang New Town.

Like Choa Chu Kang, it usually takes an hour for passengers to travel from Yew Tee to the Central Area when using the station which changes at Jurong East.

Its anchor tenants are NTUC FairPrice, Shaw Theatres, Cotton On, Popular Bookstore and the Choa Chu Kang Community Library.

The mall has undergone enhancement works to create a four-storey retail extension block measuring over 16,500 sq ft (1,530 m2).

As for Junction 10, it is a shopping mall by Far East Organisation, located along the boundaries of Choa Chu Kang and Bukit Panjang.

[20] On 31 October 2024, an eastern black-and-white colobus monkey named Mykel was spotted by a resident in Villa Verde Park in Choa Chu Kang, months after escaping from the Singapore Zoo.

Wildlife Personnel were activated to catch Mykel on 1 November 2024 and it was sent for heath inspections at Singapore Zoo Health Checkup facility before returning to the enclosure.