Sea Lake flood map & planning overlays
Sea Lake keeps 33 heritage places on Buloke's smallest lots.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Sea Lake
(Buloke, VIC) - 219.65 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 6 October 2026.
Constraint readout
219.65 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Sea Lake's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Sea Lake at a glance
How Sea Lake is zoned
Selling in Sea Lake? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 219.65 km², Sea Lake is highly constrained by planning overlays. About 6% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 33 heritage-listed sites on record, and the dominant land-use zone is Farming Zone (FZ). The median lot measures about 1,012 m² across 852 parcels.
Who lives in Sea Lake
Census 2021 figures published by the ABS for the Sea Lake 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 892, and decile 1 within Victoria. The national average is 1000.
Age profile
Share of Sea Lake's 619 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Buloke, the wider ABS statistical area containing Sea Lake. There is no annual population series published at suburb level, so this describes the surrounding area rather than Sea Lake itself.
7,223 in 2001 to 5,891 in 2025, down 18%.
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.
Sea Lake 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 | Not watched | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 6 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 Sea Lake 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 →Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and the indicative soil reactivity range to expect for a Sea Lake lot.
Sea Lake planning - frequently asked
Is Sea Lake flood-prone?
About 6% of Sea Lake falls within a mapped flood overlay, against the council-wide suburb average of 34%.
Is Sea Lake bushfire-prone?
Around 100% of Sea Lake is mapped as bushfire-prone, compared with a Buloke average of 99%.
What is the zoning in Sea Lake?
The dominant planning zone in Sea Lake is Farming Zone (FZ), though the suburb also includes Public Conservation and Resource Zone (PCRZ) and Transport Zone (TRZ2).
Does Sea Lake have heritage-listed places?
Sea Lake has 33 heritage-listed places on record.
What is the typical lot size in Sea Lake?
Across 852 surveyed parcels in Sea Lake, the median lot size is about 1,012 m². There are also 160 registered easements mapped in the suburb.
Does Sea Lake have a train station?
There is no train station inside Sea Lake itself. The suburb is served by 1 bus stop.
What is the population of Sea Lake?
At the 2021 Census Sea Lake had 619 usual residents, with a median age of 51 and an average household size of 2.1 people. The wider Buloke statistical area, which contains Sea Lake, went from 7,223 people in 2001 to 5,891 in 2025, down 18%.
Is Sea Lake an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Sea Lake scores 892 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 Sea Lake?
Median household income in Sea Lake was $883 a week at the 2021 Census, against $1,042 for the typical suburb in Buloke. Median rent was $140 a week and the median mortgage repayment $650 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Tyrrell | 10.1 km | <1% | 100% |
| Boigbeat | 10.3 km | 2% | 100% |
| Myall (Sea Lake) | 14.5 km | Not mapped | 100% |
| Lake Tyrrell | 17.1 km | 89% | 4% |
| Banyan | 17.4 km | <1% | 100% |
| Ninda | 17.8 km | 0% | 100% |
| Tyrrell Downs | 18.0 km | 11% | 100% |
| Berriwillock | 18.8 km | 2% | 100% |
| Waitchie Swan Hill |
19.7 km | 20% | 100% |
| Bimbourie | 20.5 km | 0% | 100% |