Thirlmere vs Tahmoor

Tahmoor is the younger of the two, with a median age of 34 against 38 in Thirlmere. In both, most households own their home and the large majority of homes are detached houses. In Thirlmere, about half of households are couple families.

Which one suits you?

There is no overall winner — the suburb that suits a family with school-age kids is routinely the wrong one for someone commuting into the city. So each of these answers its own question, against a checklist you can see, using the same figures in the tables below.

Families with school-age kids

They split

one each way, out of the 6 things we measure here

  • Thirlmere carries lower crime risk (37/100 vs 68/100)
  • Tahmoor has more parks and reserves (10 vs 5)

Weighs schools, house stock, crime, parks, childcare, and who already lives there.

First-home buyers

Tahmoor

ahead on the one thing that separates them

  • has cheaper land ($670,000 vs $901,250)

Weighs house prices, land prices, and mortgage stress.

Renters

Too close to call

Nothing among the 3 things we measure here separates them by enough to be worth acting on.

Weighs rent, rental stress, and how much is for rent.

Commuting to the city

Tahmoor

ahead on the one thing that separates them

  • is more walkable (79/100 vs 34/100)

Weighs distance, drive time, rail access, and walkability.

Downsizers and retirees

They split

one each way, out of the 5 things we measure here

  • Thirlmere carries lower crime risk (37/100 vs 68/100)
  • Tahmoor is more walkable (79/100 vs 34/100)

Weighs smaller dwellings, who already lives there, GPs, walkability, and crime.

Investors

Thirlmere

ahead on the one thing that separates them

  • is growing faster (23.2% vs 14.0%)

Weighs house yield and population growth.

Where they sit

Thirlmere and Tahmoor drawn to the same scale. Both outlines are shown together, so the map answers whether they share a border and how their areas compare.

Thirlmere Tahmoor
Hides rows where both suburbs match

Bars start at zero. Scores, risks and rankings are drawn against their full 0–100 range; other rows are drawn in proportion to the larger of the two.

Side by side, out of 100

Risks are inverted — shown as safety and low exposure — so a longer bar always means better.

Thirlmere Tahmoor
Walkability 34 / 79
Thirlmere — Walkability: 34/100 Tahmoor — Walkability: 79/100
Safety 63 / 32
Thirlmere — Safety: 63/100 Tahmoor — Safety: 32/100
Low fire risk 6 / 4
Thirlmere — Low fire risk: 6/100 Tahmoor — Low fire risk: 4/100

Demographics

Thirlmere skews older (38 vs 34).

Thirlmere Tahmoor
Population 4,986 5,777
+16% vs other
Population trend (2016 → 2021) +23.2% +14.0%
Median age 38 34
Median household income $88,816/yr $90,428/yr
+2% vs other
Median weekly rent $420/wk
+2% vs other
 $410/wk

Age profile

Share of residents in each band, 2021 Census.

Thirlmere Tahmoor
0-4 7.0% / 8.2%
Thirlmere — 0-4: 7.0% Tahmoor — 0-4: 8.2%
5-14 12.4% / 15.0%
Thirlmere — 5-14: 12.4% Tahmoor — 5-14: 15.0%
15-19 5.8% / 6.1%
Thirlmere — 15-19: 5.8% Tahmoor — 15-19: 6.1%
20-24 6.6% / 6.2%
Thirlmere — 20-24: 6.6% Tahmoor — 20-24: 6.2%
25-34 13.7% / 14.7%
Thirlmere — 25-34: 13.7% Tahmoor — 25-34: 14.7%
35-44 10.7% / 12.0%
Thirlmere — 35-44: 10.7% Tahmoor — 35-44: 12.0%
45-54 11.1% / 13.2%
Thirlmere — 45-54: 11.1% Tahmoor — 45-54: 13.2%
55-64 11.4% / 9.7%
Thirlmere — 55-64: 11.4% Tahmoor — 55-64: 9.7%
65-74 11.0% / 8.6%
Thirlmere — 65-74: 11.0% Tahmoor — 65-74: 8.6%
75-84 6.7% / 4.9%
Thirlmere — 75-84: 6.7% Tahmoor — 75-84: 4.9%
85+ 3.4% / 1.6%
Thirlmere — 85+: 3.4% Tahmoor — 85+: 1.6%

Bars are drawn against the largest share shown (15.0%).

Who lives together

Household composition, 2021 Census.

Thirlmere 47.7% couple families
Thirlmere — Couple Families: 47.7% Thirlmere — Lone Person: 32.3% Thirlmere — One Parent Families: 17.4% Thirlmere — Group Household: 1.8% Thirlmere — Other Families: 0.8%
Tahmoor 44.8% couple families
Tahmoor — Couple Families: 44.8% Tahmoor — Lone Person: 29.1% Tahmoor — One Parent Families: 21.8% Tahmoor — Group Household: 3.3% Tahmoor — Other Families: 1.0%
Couple Families Lone Person One Parent Families Group Household Other Families

Who owns and who rents

Occupied private dwellings by tenure, 2021 Census.

Thirlmere 24.7% renting
Thirlmere — Owned Outright: 31.9% Thirlmere — Mortgage: 43.4% Thirlmere — Renting: 24.7%
Tahmoor 32.3% renting
Tahmoor — Owned Outright: 26.2% Tahmoor — Mortgage: 41.5% Tahmoor — Renting: 32.3%
Owned outright Mortgage Renting

Where residents were born

Largest overseas birthplaces, as a share of all residents, 2021 Census. A dash means that country is not among the suburb's own eight largest.

Thirlmere Tahmoor
England 3.8% / 3.3%
Thirlmere — England: 3.8% Tahmoor — England: 3.3%
New Zealand 0.9% / 1.1%
Thirlmere — New Zealand: 0.9% Tahmoor — New Zealand: 1.1%
Scotland 0.5% / 0.5%
Thirlmere — Scotland: 0.5% Tahmoor — Scotland: 0.5%
Lebanon 0.5% / 0.4%
Thirlmere — Lebanon: 0.5% Tahmoor — Lebanon: 0.4%
Philippines 0.4% / 0.4%
Thirlmere — Philippines: 0.4% Tahmoor — Philippines: 0.4%

Bars are drawn against the largest share shown (3.8%).

Qualifications

Highest non-school qualification, residents 15+, 2021 Census.

Thirlmere Tahmoor
Certificate III & IV 20.7% / 19.6%
Thirlmere — Certificate III & IV: 20.7% Tahmoor — Certificate III & IV: 19.6%
Advanced Diploma / Diploma 7.2% / 6.9%
Thirlmere — Advanced Diploma / Diploma: 7.2% Tahmoor — Advanced Diploma / Diploma: 6.9%
Bachelor Degree 6.9% / 6.0%
Thirlmere — Bachelor Degree: 6.9% Tahmoor — Bachelor Degree: 6.0%
Postgraduate Degree 2.0% / 2.0%
Thirlmere — Postgraduate Degree: 2.0% Tahmoor — Postgraduate Degree: 2.0%
Graduate Diploma / Certificate 1.3% / 1.1%
Thirlmere — Graduate Diploma / Certificate: 1.3% Tahmoor — Graduate Diploma / Certificate: 1.1%

Bars are drawn against the largest share shown (20.7%).

What people live in

Occupied private dwellings by structure, 2021 Census.

Thirlmere 90.1% houses
Thirlmere — Houses: 90.1% Thirlmere — Townhouses: 9.1% Thirlmere — Flats / Apartments: 0.8%
Tahmoor 90.8% houses
Tahmoor — Houses: 90.8% Tahmoor — Townhouses: 7.7% Tahmoor — Flats / Apartments: 1.5%
Houses Townhouses Flats / Apartments

Property market

Thirlmere Tahmoor
Median house price $1,005,000 $995,000
Median unit price —
same for both
Median land price $901,250 $670,000
Typical days to sell (houses) 28 days
from 95 sales
 27 days
from 105 sales

House price by bedroom count

Only bed counts both suburbs published enough sales for. Sale counts are shown because the buckets differ in depth.

Thirlmere Tahmoor
3 bed $905K / $884K
Thirlmere — 3 bed: $905K (37 sales) Tahmoor — 3 bed: $884K (42 sales)

37 vs 42 sales

4 bed $1.01M / $1.04M
Thirlmere — 4 bed: $1.01M (100 sales) Tahmoor — 4 bed: $1.04M (94 sales)

100 vs 94 sales

5 bed $1.2M / $1.25M
Thirlmere — 5 bed: $1.2M (11 sales) Tahmoor — 5 bed: $1.25M (14 sales)

11 vs 14 sales

6 bed $1.48M / $1.2M
Thirlmere — 6 bed: $1.48M (7 sales) Tahmoor — 6 bed: $1.2M (9 sales)

7 vs 9 sales

Zoning mix

Thirlmere has more land zoned for conservation (30% vs 9%).

Thirlmere Tahmoor
Rural and farming 53% 58%
Environmental 30% 9%
Residential 11% 28%
Infrastructure and transport 5% 1%
Parks and recreation 1% 2%
Zoning sets what may be built, not what is there today. A single address can sit in a different zone to the suburb around it. Zones as at 2026-09.

Development activity

Thirlmere Tahmoor
New dwellings approved 1,338
across Wollondilly
same for both
Approvals change year on year +92%
same for both

Gross rental yield

Gross — before strata, rates, management, insurance and vacancy. From median advertised rents and median asking prices over the last 6 months. How we calculate.

Thirlmere Tahmoor
Houses 3.1%
$650/wk on $1.1M
 3.4%
$662/wk on $1.03M
Units —
same for both

Ranking within NSW

Thirlmere Tahmoor
House price Higher than 50% of NSW Higher than 47% of NSW
Income Higher than 57% of NSW Higher than 58% of NSW
Schools —
same for both
Walkability Higher than 76% of NSW Higher than 92% of NSW
Affordability Higher than 56% of NSW Higher than 61% of NSW
EV adoption Higher than 67% of NSW Higher than 22% of NSW
NBN connectivity Higher than 81% of NSW Higher than 87% of NSW
Rental yield (houses) Higher than 25% of NSW Higher than 37% of NSW

Liveability

Tahmoor is more walkable (79 vs 34).

Thirlmere Tahmoor
Grade C
same for both
Score 33/100 34/100
Socio-economic band mid-range socio-economic
decile 5/10
 mid-range socio-economic
decile 4/10

Risk profile

Tahmoor carries more crime risk (68 vs 37).

Thirlmere Tahmoor
Bushfire High
94/100
 High
96/100
Crime Low
37/100
 Moderate
68/100
Flood Not mapped
no mapped data here
same for both
Coastal erosion None
0/100
same for both
Aircraft noise None
0/100
same for both
Industrial facilities nearby 0
within 5 km
 4
within 5 km

Schools

Thirlmere Tahmoor
Inside the suburb 1
same for both
Rated above peers 0
same for both
Rated at peers 0
same for both
Rated below peers 1
same for both

Schools in Thirlmere

  • Thirlmere Public School Government · Primary below peers

Schools in Tahmoor

  • Tahmoor Public School Government · Primary below peers

Amenities in the suburb

Thirlmere Tahmoor
Supermarkets 1 2
Cafes & restaurants 3 9
Parks & reserves 5 10
Childcare 5 7
GPs 2 4
Pharmacies 1 2
Banks & Bank@Post 1 3
Fuel stations 1 3
Waterways 14 2

Mobility

Thirlmere Tahmoor
Walkability score 34/100 79/100
Distance to Sydney 94.9 km 94.2 km
Drive time (normal traffic) 80 min 78 min
Public transport score 66/100
Bus
 75/100
Rail · Bus
Peak arrivals per hour 38.0
7-9am + 5-7pm
 46.0
7-9am + 5-7pm
Median peak wait 1 min
scheduled, not actual
 0 min
scheduled, not actual
Electric vehicle share 0.6%
postcode 2572
 0.2%
postcode 2573
Rooftop solar per 100 dwellings 50
postcode 2572
 62
postcode 2573

How people get to work

Method of travel on census day 2021 — which fell during COVID restrictions, so working from home is inflated and every travel mode understated.

Thirlmere Tahmoor
Car (driver) 66.8% / 68.1%
Thirlmere — Car (driver): 66.8% Tahmoor — Car (driver): 68.1%
Worked from Home 26.6% / 23.1%
Thirlmere — Worked from Home: 26.6% Tahmoor — Worked from Home: 23.1%
Car (passenger) 4.6% / 4.6%
Thirlmere — Car (passenger): 4.6% Tahmoor — Car (passenger): 4.6%
Walked Only 1.4% / 1.9%
Thirlmere — Walked Only: 1.4% Tahmoor — Walked Only: 1.9%
Train 0.6% / 1.9%
Thirlmere — Train: 0.6% Tahmoor — Train: 1.9%

Bars are drawn against the largest share shown (68.1%).

Setting

Thirlmere Tahmoor
Elevation 325 m
above sea level, at the suburb centre
 275 m
above sea level, at the suburb centre
Distance to the ocean 36.5 km 32.4 km

NBN connectivity

Thirlmere Tahmoor
Connectivity score 74/100 77/100
Most common technology Fibre to the premises
same for both
Full-fibre (FTTP) share 54%
2,610 premises
 60%
3,454 premises

Climate

Thirlmere Tahmoor
Annual rainfall 817 mm
same for both
Summer max (Jan) 29.4°C
same for both
Winter min (Jul) 4.2°C
same for both

Air quality (annual mean)

Thirlmere Tahmoor
PM2.5 4.8 µg/m³
same for both
PM10 12.1 µg/m³
same for both
NO₂ 0.11 pphm
same for both

Council rates

Thirlmere Tahmoor
Average residential rate $2,099/yr
same for both
Council Wollondilly
same for both

Federal electorate

Thirlmere Tahmoor
Division Hume
same for both
Member Angus Taylor
same for both
Party Liberal
same for both

First Home Owner Grant

Thirlmere Tahmoor
Grant amount $10,000
same for both
Property price cap $600,000
same for both
Eligibility New
same for both

Tags

Thirlmere

Acreage River

Tahmoor

Acreage Family

More comparisons

Other comparisons with Thirlmere

Thirlmere vs Picton Thirlmere vs Buxton Thirlmere vs Lakesland Thirlmere vs Couridjah Thirlmere vs Mowbray Park

Other comparisons with Tahmoor

Tahmoor vs Picton Tahmoor vs Bargo Tahmoor vs Wilton Tahmoor vs Buxton Tahmoor vs Pheasants Nest Tahmoor vs Couridjah
Full data on Thirlmere Full data on Tahmoor
Unlock full address-level data — $29/month

Information shown is provided as-is from Australian government and commercial data sources.
Always verify with the relevant authority before making property decisions.
See Data Sources and How We Calculate for details.

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