Joslin flood map & planning overlays
A planning-constraint profile of Joslin
(The City of Norwood Payneham and St Peters, SA) - 0.5 km², mapped from live council and
state overlay data. This suburb is moderately constrained.
Profile updated 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
0.5 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Joslin's boundary, with the flood, bushfire and environmental overlays drawn on top. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Joslin
Two different things, kept apart on purpose. The ANEF contour is the planning instrument - a forecast published per airport that planning schemes use to control noise-sensitive development. Observed overflight is what a sampled aircraft-tracking feed actually recorded over the suburb - where aircraft flew, how low and how often.
Observed overflight - sampled 4 Sep to 26 Sep 2026
Night movements: not established - night is sampled as often as day, but too few night flights have been seen here to conclude either way.
Traffic is sampled rather than watched continuously, so every figure is a floor: aircraft not captured between samples are not represented. Rates are per 500 m square - the busiest square in the suburb, not a count of flights over the suburb - and a square is only rated where enough traffic was seen to measure it. Altitudes are above mean sea level. Flight paths change with runway use, weather, season and airspace design. This is a record of observed traffic; it is not a noise contour and not a planning control.
Joslin at a glance
How Joslin is zoned
Selling in Joslin? The zone and overlays on this page are the Planning and Design Code controls a Form 1 vendor's statement has to disclose.
Across its 0.5 km², Joslin is moderately constrained by planning overlays. About 26% of the suburb sits within a mapped flood overlay. There are 5 heritage-listed sites on record, and the dominant land-use zone is Established Neighbourhood. The median lot measures about 770 m² across 523 parcels.
Who lives in Joslin
Census 2021 figures published by the ABS for the Joslin suburb boundary itself, not a wider region.
Socio-economic standing
ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.
Score 1104, and decile 10 within South Australia. The national average is 1000.
Age profile
Share of Joslin's 1,243 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of St Peters - Marden, the wider ABS statistical area containing Joslin. There is no annual population series published at suburb level, so this describes the surrounding area rather than Joslin itself.
12,677 in 2001 to 14,481 in 2025, up 14%.
Source: ABS Census 2021 and SEIFA 2021 (Suburbs and Localities), Regional Population (SA2), CC BY 4.0. Small counts are randomly adjusted by the ABS.
Joslin data sources and coverage
“Not mapped” means we hold no source layer for this suburb - never an all-clear.
| Dataset | Coverage | Publisher |
|---|---|---|
| Flood mapping | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Bushfire-prone mapping | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Zoning | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Heritage and environment | Mapped where published | the South Australian Planning and Design Code and Location SA spatial data |
| Aircraft noise contours (ANEF) | Not held | the South Australian Planning and Design Code and Location SA spatial data, Defence |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 26 September 2026. See the methodology and full source list. Source data changes over time and critical decisions should be checked with the responsible authority.
Check a specific Joslin address
See exactly which overlays touch a single property - the interactive map is free. Need it on paper? A full planning PDF is just $9.
The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Joslin lot.
See what's in the $9 report →Joslin planning - frequently asked
Is Joslin flood-prone?
About 26% of Joslin falls within a mapped flood overlay, against the council-wide suburb average of 26%.
Is Joslin bushfire-prone?
Bushfire mapping covers Joslin and little to none of it is mapped as bushfire-prone.
Is Joslin under a flight path?
Aircraft were observed over about 45% of Joslin in the period sampled, but only above 3,000 ft - the lowest measured was 3,500 ft. Traffic is sampled rather than watched continuously and flight paths change with runway use, weather and season; the ANEF contour is the planning instrument.
What is the zoning in Joslin?
The dominant planning zone in Joslin is Established Neighbourhood, though the suburb also includes Open Space and Housing Diversity Neighbourhood.
Does Joslin have heritage-listed places?
Joslin has 5 heritage-listed places on record.
What is the typical lot size in Joslin?
Across 523 surveyed parcels in Joslin, the median lot size is about 770 m².
Does Joslin have a train station?
There is no train station inside Joslin itself. The suburb is served by 4 bus stops.
What is the population of Joslin?
At the 2021 Census Joslin had 1,243 usual residents, with a median age of 48 and an average household size of 2.6 people. The wider St Peters - Marden statistical area, which contains Joslin, went from 12,677 people in 2001 to 14,481 in 2025, up 14%.
Is Joslin an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Joslin scores 1104 and sits in decile 10 of 10 nationally and decile 10 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Joslin?
Median household income in Joslin was $2,323 a week at the 2021 Census, against $1,752 for the typical suburb in The City of Norwood Payneham and St Peters. Median rent was $310 a week and the median mortgage repayment $2,461 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Royston Park | 0.5 km | 20% | 0% |
| St Peters | 0.6 km | 28% | 0% |
| Evandale | 0.9 km | 20% | 0% |
| Marden | 1.0 km | 28% | 0% |
| Walkerville The Corporation of the Town of Walkerville |
1.3 km | 3% | 0% |
| Stepney | 1.3 km | 37% | 0% |
| Payneham | 1.4 km | 34% | 0% |
| College Park | 1.4 km | 32% | 0% |
| Gilberton The Corporation of the Town of Walkerville |
1.4 km | 6% | 0% |
| Vale Park The Corporation of the Town of Walkerville |
1.5 km | 4% | 0% |
See all The City of Norwood Payneham and St Peters suburb profiles →