Simson flood map & planning overlays
Simson carries 44.3% environmental significance overlay, 2nd in Central Goldfields.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Simson
(Central Goldfields, VIC) - 5.88 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 24 October 2026.
Constraint readout
5.88 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Simson'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 Simson
The ANEF contour is a published planning forecast and observed overflight is what a sampled tracking feed recorded - neither describes any individual property.
Observed overflight - sampled 4 Sep to 24 Oct 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.
How this is measured
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.
Simson at a glance
How Simson is zoned
Selling in Simson? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 5.88 km², Simson is highly constrained by planning overlays. About 34% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 6 heritage-listed sites on record, and the dominant land-use zone is Public Conservation and Resource Zone (PCRZ). The median lot measures about 20,395 m² across 102 parcels.
Who lives in Simson
Census 2021 figures published by the ABS for the Simson 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 907, and decile 1 within Victoria. The national average is 1000.
Age profile
Share of Simson's 76 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Maryborough Surrounds, the wider ABS statistical area containing Simson. There is no annual population series published at suburb level, so this describes the surrounding area rather than Simson itself.
5,375 in 2001 to 5,714 in 2025, up 6%.
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.
Simson 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 | Vicmap Planning and Victorian Government spatial services |
| Bushfire-prone mapping | Mapped | Vicmap Planning and Victorian Government spatial services |
| Zoning | Mapped | Vicmap Planning and Victorian Government spatial services |
| Heritage and environment | Mapped where published | Vicmap Planning and Victorian Government spatial services |
| Aircraft noise contours (ANEF) | Not held | Vicmap Planning and Victorian Government spatial services, 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 24 October 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 Simson 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.
See what's in the $9 report →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 the indicative soil reactivity range to expect for a Simson lot.
Simson planning - frequently asked
Is Simson flood-prone?
About 34% of Simson falls within a mapped flood overlay, against the council-wide suburb average of 26%.
Is Simson bushfire-prone?
Around 100% of Simson is mapped as bushfire-prone, compared with a Central Goldfields average of 100%.
Is Simson under a flight path?
Aircraft were observed over about 15% of Simson 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 Simson?
The dominant planning zone in Simson is Public Conservation and Resource Zone (PCRZ), though the suburb also includes Farming Zone (FZ) and Rural Living Zone (RLZ).
Does Simson have heritage-listed places?
Simson has 6 heritage-listed places on record.
What is the typical lot size in Simson?
Across 102 surveyed parcels in Simson, the median lot size is about 20,395 m². There are also 2 registered easements mapped in the suburb.
What is the population of Simson?
At the 2021 Census Simson had 76 usual residents, with a median age of 57 and an average household size of 2.3 people. The wider Maryborough Surrounds statistical area, which contains Simson, went from 5,375 people in 2001 to 5,714 in 2025, up 6%.
Is Simson an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Simson scores 907 and sits in decile 2 of 10 nationally and decile 1 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Simson?
Median household income in Simson was $1,542 a week at the 2021 Census, against $1,024 for the typical suburb in Central Goldfields. Median rent was $214 a week and the median mortgage repayment $867 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Havelock | 3.0 km | 48% | 100% |
| Timor | 4.3 km | 47% | 100% |
| Flagstaff | 6.1 km | Not mapped | 100% |
| Bowenvale | 6.6 km | 23% | 100% |
| Carisbrook | 6.9 km | 20% | 100% |
| Maryborough | 7.3 km | 8% | 94% |
| Bet Bet | 8.2 km | 48% | 100% |
| Betley | 8.7 km | 84% | 100% |
| Alma | 9.3 km | 20% | 100% |
| Timor West | 9.9 km | 85% | 100% |