Dee Why at a glance
Walk score
100
Walker's paradise
Population
23.4k
Median age 36
The brief
What to know about Dee Why.
The postcode for Dee Why is 2099 (NSW), part of Greater Sydney.
Dee Why (2099) sits in the Northern Beaches region of NSW.
Dee Why has roughly 23,354 residents, with a typical family-age mix. Households are a roughly even mix of owners and renters. Day-to-day life here is very walkable, with most errands manageable on foot.
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Day to day
What it’s like to live here.
Dee Why scores 100/100 on walkability, which makes it very walkable with workable public transport options. Coffee, groceries and a meal out are mostly walking-distance, which keeps a household viable on one car.
Summer days here average around 26°C (mild), winter mornings around 8°C (mild). Annual rainfall lands at about 1302mm. Data comes from the Bureau of Meteorology's Sydney (Observatory Hill) station, 32.5km away.
Schooling within or near the suburb covers 8 government primary, 3 government secondary, 3 Catholic, 4 independent.
Who lives here
Demographics.
The 2021 Census put Dee Why's population at 23,354, with a median age of 36. That sits as a typical family-age mix. Households are a roughly even mix of owners and renters (50% own, 47% rent), which shapes everything from school catchment stability to how often properties turn over. The household mix skews family-dominated (65% family households, 29% lone person), so amenity decisions tend to follow what families want: parks, schools, supermarkets.
Population
23,354
Median age
36
Family households
65%
Lone person
29%
Demographics data as of May 2026· ABS 2021 Census
Market
The price of a home here.
Median house price
Verified median pending
We don't yet have a verified suburb-level median for this market. We're working on a data partner; in the meantime, treat the state-level figures as a guide only. How we source data.
Sales data as of May 2026· rental-nsw
Rental and ownership
Weekly rent (house)
$550/wk
Weekly rent (unit)
$550/wk
Owner occupied
50%
Renter occupied
47%
At a deeper level
23,354
Median age: 36
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Safety
Crime and safety.
807
total offences in 2025
Top offence categories
Crime statistics are reported at LGA level and may cover a broader area than this suburb.
Source: State Police Open Data
Crime data as of January 2025· State Police Open Data
Getting around
Walkability.
100
50
100
Scores calculated from OpenStreetMap data (ODbL)
Walkability data as of May 2026· OpenStreetMap
Place
Location.
Amenities
Transport
Education
Schools in Dee Why.
Local schools for Dee Why
View the catchment for each school to find out more.
Government School Catchment
Dee Why Public School
Fisher Road School
Northern Beaches Secondary College Manly Campus
© ACARA, licensed under CC BY 4.0.
Climate
Weather year-round.
Annual Rainfall
1302 mm
Hottest Month (avg max)
26.2°C
Coldest Month (avg min)
8.4°C
Monthly Rainfall (mm)
Weather data from BOM station Sydney (Observatory Hill) (33 km away)
Climate data as of May 2026· Bureau of Meteorology
Frequently asked
About Dee Why.
- What is the Dee Why postcode?
- Dee Why is in the 2099 postcode, in NSW, in the Northern Beaches Council region.
- Where is Dee Why?
- Dee Why is a suburb of Sydney, in NSW 2099. It is part of the Greater Sydney area, in the Northern Beaches Council region.
- What is the average rent in Dee Why?
- The median weekly rent for houses is $550, for units it's $550.
- What schools are in Dee Why?
- There are 20 schools serving Dee Why on this page, including St Kevin's Catholic Primary School, Dee Why Public School, St Luke's Grammar School.
- How walkable is Dee Why?
- Dee Why has a Walk Score of 100 out of 100, very walkable. transit score 50, bike score 100.
- What suburbs are near Dee Why?
- Dee Why is close to Wingala, Dee Why Beach, Cromer, Cromer Heights, North Curl Curl.
- What is the population of Dee Why?
- The population of Dee Why is approximately 23,354 (2021 Census). The median age is 36.
For Sale
Dee Why
Buying
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Surrounding Suburbs
Side by side
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Sources cited
Median, growth and rental data from state revenue offices and ABS. Census from ABS 2021. Climate from BoM. Hazard from Geoscience Australia. School data from ACARA. Crime from state police open data. Full methodology →
Always dated
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