Worst Internet Suburbs in Adelaide (Bottom 50)

These are the 50 lowest-scoring suburbs for internet quality within 50km of Adelaide's CBD. Common issues include older NBN technology types, limited fibre coverage, and lower household connectivity rates. If you live in one of these suburbs, check whether an NBN technology upgrade is available at your address.

50 suburbs ranked · Data updated March 2026

Rank	Suburb	State	Tech Type	Score	Grade	Speed Range	Premises
1	Kuitpo Colony	SA	Satellite	2.5/10	D	12-25 Mbps	18
2	Cherryville	SA	Satellite	2.5/10	D	12-25 Mbps	56
3	Blackfellows Creek	SA	Satellite	3/10	D+	12-25 Mbps	16
4	Mount Barker Junction	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	7
5	Montarra	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	11
6	Millbrook	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	12
7	Castambul	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	13
8	Kyeema	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	14
9	Dorset Vale	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	15
10	Woolsheds	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	16
11	Salem	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	17
12	St Ives	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	18
13	Fischer	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	25
14	Hay Valley	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	27
15	Kingsford	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	29
16	Leawood Gardens	SA		3.5/10	D+		32
17	Bletchley	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	33
18	Barossa Goldfields	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	34
19	Mcharg Creek	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	38
20	Green Hills Range	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	39
21	Red Creek	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	39
22	Gemmells	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	41
23	Kangaroo Flat	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	44
24	Port Gawler	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	44
25	Willunga Hill	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	47
26	Chapel Hill	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	49
27	Sampson Flat	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	51
28	Gawler River	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	54
29	Mount Barker Summit	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	54
30	Sandergrove	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	58
31	Buckland Park	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	62
32	Mount Crawford	SA		3.5/10	D+		65
33	Yundi	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	66
34	The Range	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	67
35	Lower Hermitage	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	73
36	Reeves Plains	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	73
37	Ward Belt	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	73
38	Flaxley	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	74
39	Bull Creek	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	78
40	St Kilda	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	79
41	Paechtown	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	80
42	Upper Hermitage	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	86
43	Hartley	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	87
44	Rosedale	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	87
45	Buchfelde	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	89
46	Paris Creek	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	90
47	Cromer	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	92
48	Middle Beach	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	92
49	Gould Creek	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	105
50	Yattalunga	SA	Fixed Wireless	3.5/10	D+	25-75 Mbps	106

About this ranking

Rankings are based on PickNBN's composite internet quality score, which factors in NBN technology type, fibre coverage percentage, FTTP upgrade status, and ABS Census household connectivity rates. Suburbs are sorted by score (highest first), with ties broken by total NBN premises.

Only suburbs with sufficient data quality (score ≥ 3/5) are included. Data sourced from NBN Co, ABS Census, and ACCC broadband benchmarks.