As calls to extend the wage subsidy scheme continue, The Treasury has released figures on just how many applications have been processed by postcode.

There have been 7457 applications in the Central West with the Dubbo postcode leading the way with 1423.

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This is followed by the Orange postcode with 1301 application, while the Bathurst postcode has 1141.

Data is for businesses and not-for-profits that have had JobKeeper payments for the April fortnights. This is the most recent data available.

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The Mudgee postcode rated the next highest within the region with 653 applications, followed by Parkes at 375, Young (361), Forbes (351), Lithgow (322), Cowra (321) and Cootamundra (185).

There have been 184 applications in the Narromine postcode, 166 in Wellington, then Grenfell (161), Harden (113), Oberon (105), Nyngan (103), Canowindra (101) and Blayney (91).

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Business NSW's Western NSW regional manager Vicki Seccombe said she was not surprised by the number of businesses that have applied for JobKeeper.

"Many business owners across the region were hit hard with the pandemic, and were already highly impacted by drought and or bushfire prior to that," she said.

Ms Seccombe estimates that 30 to 40 per cent of all businesses in Western NSW have accessed the JobKeeper payments, this includes sole traders, farmers or people working for themselves.

"If you delve a bit further and you just look at the number of employing businesses who have accessed the payment, then we believe it's more likely to be 80 per cent to 90 per cent," she said.

JobKeeper has been crucial for our business community, Ms Seccombe said and the government needs to think very carefully about how it winds back the initiative.

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"Business NSW has been saying for some time that September is going to be the month where the true impacts of the pandemic hit home with JobKeeper set to end and a number of deferral measures the banks initiated at the start of the pandemic are also due to expire," she said.

"Those industries that have been most impacted by COVID-19 will need targeted support post September, this includes industries such as accommodation and food services, retail, arts & recreation, education and training."