By Terrence Ngu, Data Editor at Districtpedia
Singapore's property market still runs on a numbering system that was created for mail. The 28 postal districts — D1 through D28 — are the invisible grid behind every listing search, price comparison, and agent specialisation claim. Whether you are a buyer trying to decode a property ad or an agent explaining location to a client, knowing how postal codes map to districts is a basic professional skill.
This article gives you the complete Singapore postal district map with postal code ranges, neighbourhoods, and HDB towns for all 28 districts. We also explain why this decades-old system still shapes property search today, and how to use it without getting lost in the details.
What you will find in this guide
- The full list of 28 postal districts (D1–D28) with postal code ranges and key areas
- How Singapore's postal code system evolved from 1950 to 1995
- Why postal districts still matter for property listings and price comparisons
- Which districts are dominated by HDB stock and which lean private
- Practical tips for buyers and agents searching by district
What are Singapore's 28 postal districts?
Singapore's postal district system began in 1950 as a two-digit postal code that divided the island into 28 districts. Each district covered a geographic sector, and the first two digits of a postal code told the post office which district a letter was headed to. The system was expanded to four digits on 1 July 1979, and then to the current six-digit format on 1 September 1995 National Library Board.
Today, the six-digit postal code handles actual mail delivery. But the 28 districts remain the default geography for property. When a listing says "District 9," every agent and portal user understands it means Orchard, River Valley, and Cairnhill — even though the postal code itself no longer carries a district digit.
The districts are grouped into broader market regions used by the Urban Redevelopment Authority (URA) for property market reporting: the Core Central Region (CCR), Rest of Central Region (RCR), and Outside Central Region (OCR). These groupings affect stamp duty calculations, loan limits, and market commentary, so the district number is rarely just a label.
Singapore postal district map: full list D1 to D28
The table below lists all 28 postal districts with their postal code ranges, general location labels, and the HDB towns or neighbourhoods most commonly associated with each district. Use this as a quick-reference when you see a district number in a listing or report.
| District | Postal Code Range | General Location | Key Areas / HDB Towns |
|---|---|---|---|
| D1 | 01–06 | Raffles Place, Marina, Cecil | CBD, Marina Bay |
| D2 | 07–08 | Tanjong Pagar, Chinatown | Chinatown, Shenton Way |
| D3 | 14–16, 09–10 | Tiong Bahru, Alexandra, Queenstown | Queenstown, Tiong Bahru, Redhill |
| D4 | 04–05 | Telok Blangah, Harbourfront | Sentosa, Harbourfront, Telok Blangah |
| D5 | 11–13, 21–23 | Pasir Panjang, Clementi New Town | Clementi, West Coast, Pasir Panjang |
| D6 | 17–18 | High Street, Beach Road | City Hall, Bugis |
| D7 | 19–20, 58 | Middle Road, Golden Mile | Rochor, Bugis |
| D8 | 30–33 | Little India, Serangoon Road | Little India, Farrer Park |
| D9 | 21–23, 58–59 | Orchard, Cairnhill, River Valley | Orchard, River Valley, Cairnhill |
| D10 | 24–27, 59–60 | Ardmore, Bukit Timah, Holland Road | Bukit Timah, Holland Village, Tanglin |
| D11 | 28–30, 59–60 | Watten Estate, Novena, Thomson | Novena, Newton, Thomson |
| D12 | 31–33, 56–57 | Balestier, Toa Payoh, Serangoon | Toa Payoh, Balestier, Serangoon |
| D13 | 34–37, 55–56 | Macpherson, Braddell | MacPherson, Potong Pasir |
| D14 | 38–41, 52–54 | Geylang, Eunos | Geylang, Eunos, Paya Lebar |
| D15 | 42–45, 53–54 | Katong, Joo Chiat, Amber Road | Marine Parade, Katong, East Coast |
| D16 | 46–48 | Bedok, Upper East Coast | Bedok, Upper East Coast, Bayshore |
| D17 | 49–51, 81 | Changi, Loyang, Pasir Ris | Changi, Loyang, Pasir Ris |
| D18 | 52–54, 82 | Tampines, Pasir Ris | Tampines, Simei, Pasir Ris |
| D19 | 53–55, 82 | Serangoon Garden, Hougang, Punggol | Hougang, Sengkang, Punggol, Serangoon |
| D20 | 56–57 | Ang Mo Kio, Bishan | Ang Mo Kio, Bishan |
| D21 | 58–59 | Upper Bukit Timah, Ulu Pandan | Clementi Park, Upper Bukit Timah |
| D22 | 60–64 | Jurong, Tuas | Jurong East, Jurong West, Boon Lay, Tuas |
| D23 | 65–68, 70–71 | Hillview, Dairy Farm, Bukit Panjang | Bukit Panjang, Choa Chu Kang, Hillview |
| D24 | 72–73 | Lim Chu Kang, Tengah | Lim Chu Kang, Tengah |
| D25 | 75–78 | Kranji, Woodgrove | Woodlands, Admiralty |
| D26 | 79–80 | Upper Thomson, Springleaf | Yishun, Springleaf |
| D27 | 69, 72–73 | Yishun, Sembawang | Sembawang, Yishun |
| D28 | 77–78 | Seletar, Yio Chu Kang | Seletar, Yio Chu Kang |
Postal code ranges overlap between districts
Some postal sectors appear in more than one district. This is because the 28-district grid was designed for a simpler era of mail sorting, not for modern planning boundaries. When in doubt, cross-check with the street name or explore the district on Districtpedia.
How the postal district system still shapes property search
The six-digit postal code replaced the district-based system for mail in 1995. Yet property portals, URA statistics, and agent marketing all still speak in districts. There are practical reasons why.
Listing search and filtering. Every major property portal lets users filter by district number. A buyer who wants to live near the CBD can search D1, D2, D6, and D9. A family looking for HDB resale in the east might focus on D15, D16, or D18. The district is a shorthand that every participant in the market understands.
Price comparison and benchmarking. District-level price data is widely quoted in market reports and casual conversation. "District 10 prices" or "District 19 transactions" are common reference points. The district acts as a rough geographic container for comparing like with like, even though two properties in the same district can differ enormously in age, tenure, and proximity to amenities.
Agent specialisation. Many agents build their brand around district expertise. A profile that says "District 15 specialist" or "Focused on D19 and D20" tells potential clients that the agent knows the local inventory, recent transactions, and neighbourhood character. At Districtpedia, we see this pattern consistently in agent spotlight interviews: the agents who win trust are the ones who can speak with specificity about their patch.
HDB vs private stock: what the district numbers hide
Not all districts are created equal in housing type. Some are almost entirely private. Others are dominated by HDB flats. Understanding this helps buyers set realistic expectations and helps agents position their advice.
As of 2025, HDB dwellings accounted for 77.2% of Singapore resident households SingStat. HDB managed about 1,167,004 dwelling units as at 31 March 2025, and has built 1,313,368 dwelling units and commercial properties by end-2025 HDB.
But this national average is not evenly distributed. Districts in the Core Central Region — D1, D2, D9, D10, and D11 — are overwhelmingly private. You will find very few HDB flats in Orchard or Ardmore. In contrast, districts like D16 (Bedok), D18 (Tampines), D19 (Hougang/Punggol), D20 (Ang Mo Kio/Bishan), D22 (Jurong), D23 (Bukit Panjang/Choa Chu Kang), and D27 (Sembawang/Yishun) are HDB-heavy. These are the heartland districts where most Singaporeans live, and where the bulk of resale transaction volume sits.
For buyers, this means a district search is also a tenure search. If you are looking for HDB resale, filtering by district automatically narrows you to the heartland. If you want private condominiums, the central districts are the natural starting point — but do not ignore fringe districts where newer executive condominiums and private projects have launched.
Check the tenure, not just the district
A District 15 listing could be a $1.5 million HDB maisonette in Marine Parade or a $3 million condo in Katong. The district number alone does not tell you the housing type, the age of the building, or the proximity to MRT. Always verify the tenure and street address.
Practical guide: how to use postal districts in your property search
Whether you are a first-time buyer or a practising agent, here is how to make the district system work for you rather than against you.
For buyers
Start with lifestyle, not numbers. Decide whether you need to be near the CBD, near parents, near specific schools, or near the MRT line you use daily. Then map those needs to districts. A buyer who works in Raffles Place might look at D3 (Queenstown, Redhill) for an HDB option, or D9 (River Valley) for private.
Use districts as a filter, not a decision. Districts are useful for narrowing a portal search from thousands of listings to a few hundred. But the final decision should rest on the specific block, the facing, the floor, the proximity to amenities, and the recent transaction history of that exact development.
Cross-reference with URA planning regions. If you are buying for investment, understand whether the district falls in CCR, RCR, or OCR. This affects stamp duty, loan-to-value limits, and rental demand profiles. You can explore district-level context on Districtpedia's districts page.
For agents
Own your district narrative. When you claim a district specialisation, be ready to name three recent transactions, the current average psf range for that district, and one unique neighbourhood feature that outsiders miss. Generic claims do not build trust.
Explain overlaps clearly. When a client asks why a property in Serangoon is sometimes listed as D12, D13, or D19, be ready to explain that postal district boundaries do not align perfectly with HDB town boundaries. Clarity here separates informed agents from those who guess.
Link district knowledge to buyer outcomes. Do not just recite district numbers. Connect them to what the buyer cares about: "District 19 gives you newer HDB stock in Punggol and Sengkang, with good connectivity to the north-east line and future Cross Island Line stations."
District breakdown by region
For quick orientation, here is how the 28 districts map to the three URA market regions. Use this to understand the broad market context of any district number.
Core Central Region (CCR)
D1 (Raffles Place, Marina), D2 (Tanjong Pagar, Chinatown), D6 (High Street, Beach Road), D9 (Orchard, River Valley), D10 (Ardmore, Bukit Timah), D11 (Watten Estate, Novena)
These districts contain Singapore's prime commercial and residential core. Private housing dominates. Rental yields and capital values are typically higher than the national median, and the buyer pool includes both local upgraders and foreign investors.
Rest of Central Region (RCR)
D3 (Tiong Bahru, Queenstown), D4 (Telok Blangah, Harbourfront), D5 (Pasir Panjang, Clementi), D7 (Middle Road, Golden Mile), D8 (Little India), D12 (Balestier, Toa Payoh), D13 (Macpherson, Braddell), D14 (Geylang, Eunos), D15 (Katong, Joo Chiat), D20 (Ang Mo Kio, Bishan)
RCR districts form a ring around the CCR. They contain a mix of mature HDB towns and private condominiums, often with good MRT connectivity and established amenities. Many Singaporean families buy here as a first step out of HDB ownership.
Outside Central Region (OCR)
D16 (Bedok), D17 (Changi, Loyang), D18 (Tampines, Pasir Ris), D19 (Hougang, Punggol), D21 (Upper Bukit Timah), D22 (Jurong, Tuas), D23 (Hillview, Bukit Panjang), D24 (Lim Chu Kang, Tengah), D25 (Kranji, Woodgrove), D26 (Upper Thomson, Springleaf), D27 (Yishun, Sembawang), D28 (Seletar, Yio Chu Kang)
OCR districts cover the outer suburbs and newer towns. HDB stock is plentiful, and many of these areas have seen significant development in the last two decades. Punggol, Sengkang, and Jurong East in particular have transformed from fringe locations into self-contained towns with their own commercial hubs.
URA regions are not the same as postal districts
The CCR/RCR/OCR framework is a URA convention for property market reporting. It overlaps with postal districts but does not match them exactly. Some districts sit on the boundary. Always verify the URA region for a specific project if it matters for your transaction.
Frequently asked questions
What is the difference between a postal district and a postal code?
A postal district is one of 28 geographic zones (D1–D28) created in 1950 for mail sorting. A postal code is the six-digit number used today for actual mail delivery. The district system is no longer used by SingPost, but remains the standard geography for property listings.
Why do property listings still use D1, D2, D9, etc.?
Because the 28 districts are a simple, widely understood shorthand for location. Every agent, portal, and market report uses them. They are more precise than "east" or "west" but easier to remember than a full six-digit postal code.
How do I know which district a property is in?
Check the listing — most portals display the district number. If you only have a postal code, use the first two digits and match them to the postal code ranges in the table above. For borderline cases, verify with the street address or explore the district on Districtpedia.
Do HDB towns match postal districts exactly?
No. HDB towns and postal districts overlap but do not align perfectly. For example, parts of Serangoon fall within D12, D13, and D19 depending on the exact street. Use the district as a guide, but confirm the specific location with the block number and street name.
Which districts have the most HDB flats?
Districts in the OCR and parts of the RCR tend to be HDB-heavy: D16 (Bedok), D18 (Tampines), D19 (Hougang/Punggol), D20 (Ang Mo Kio/Bishan), D22 (Jurong), D23 (Bukit Panjang/Choa Chu Kang), and D27 (Yishun/Sembawang). The CCR districts are almost entirely private.
Is the postal district system still official?
The six-digit postal code is the official system for mail delivery. The 28 districts are not used by SingPost today, but they remain embedded in property industry practice and URA market reporting conventions.
Can I search for property by district on Districtpedia?
Districtpedia's districts explorer lets you browse neighbourhood knowledge and agent expertise by area. For live listings, use the major property portals and cross-reference with the district context we provide.
Do district numbers affect property prices?
District numbers do not directly determine price, but they correlate with location attributes that do: proximity to CBD, MRT access, school zones, and housing type. A District 9 property is typically more expensive than a District 27 property because of these underlying factors, not because of the number itself.
How we got these numbers
The postal district ranges and historical timeline in this article are compiled from publicly available sources, cross-checked where possible. The 1950 origin date and the 1979 and 1995 system changes are documented by the National Library Board. HDB and household statistics come from SingStat and HDB's 2025 Key Statistics.
Districtpedia does not claim official status for this mapping. Postal district boundaries are not formally published by URA or SingPost in a single definitive table, and some sectors overlap between districts. We have assembled this reference from multiple public sources to give buyers and agents a practical working tool. If you spot an error or have an update, we welcome corrections.
Sources
- National Library Board — "Singapore's postal code system" (2016)
- SingStat — Resident Households, latest data (2025)
- HDB — Key Statistics 2025
Need help navigating a specific district?
A local agent who knows the inventory, the recent transactions, and the neighbourhood character can save you weeks of search time. Find an agent by district on Districtpedia.
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