Here are town-by-town damage assessments. The majority of officials said it is too early to make accurate estimates of the cost of damages. They stress assessments are still taking place and that numbers can fluctuate.
About 1,900 trees knocked down; of those, about 1,700 have been cleared.
No widespread closures of town roads.
Preliminary estimate of as many as 1,000 uninhabitable homes.
Source: Town spokesman Mike Deery
About eight houses deemed uninhabitable.
Thousands of trees were downed, hundreds blocking roads, all of which have been cleared.
Area of concern: Unpowered traffic lights in main intersections around town.
Source: Spokesman Sidhartha Nathan
1,200-1,500 trees down in town rights of way, many more in parks and on private properties.
South and North shores were hardest hit by flooding; central portion of town had most trees down.
Source: Spokeswoman Marta Kane
No estimates yet on trees downed, residents displaced or damages.
Areas of concern: Oak Lane, with felled trees and no power, and East Island, with flood damage and no power.
Source: Mayor Ralph Suozzi
Boardwalk is uninhabitable; city has closed off access in many places.
Sewer service restored but there remains no electricity and in some areas, no gas. Water service close to being restored. Officials urging residents to remain out of their homes. Mail service suspended. All roads are open.
Estimate of damages is more than $100 million.
Areas of concern: West End and Canal areas, due to extensive flooding. Bayfront bulkheading was overrun by water, the beach and boardwalk were moved several blocks, and in some areas, the ocean meets the bay.
Source: City Manager Jack Schnirman
About 189 homes with serious structural damage, one considered uninhabitable. Might be more in the Makamah Beach area.
Road blockages due to downed trees and/or wires reduced from 750 to zero by end of Monday.
Source: Spokesman A.J. Carter
Early estimates from shoreline to Montauk Highway -- town portions only, not including villages -- indicate several hundred homes unfit to live in and 600 to 1,000 residents displaced.
1,626 downed town trees and trees in town rights of way. 1,216 cleared by Monday afternoon. No roads blocked due to trees.
Source: Spokesman Tim Ruggeri
Nobody homeless. Eight houses damaged, none appear uninhabitable.
Estimated storm damage: $2 million.Number of downed trees: Twice or three times as many as Tropical Storm Irene. Closed roads have reopened.
Source: Town officials
Of 7,100 houses inspected by town so far, 5 percent are a total loss. Another 20 percent require an electrical inspection. A majority of buildings on the town's portion of Fire Island have significant structural damage, in addition to massive beach erosion. Oakdale and West Islip also suffered severe damage.
All roadways now open. Department of Public Works has composted 750 tons of trees, limbs and brush.
A little more than 12,000 residents are without power, down from a high of 70,000. Town has 112,000 LIPA customers.
Source: Spokeswoman Inez Birbiglia
More than 140 homes on the town's portion of Fire Island and a few dozen on the mainland are unfit for habitation.
About 2,100 trees have been reported down; all roads are passable.
Areas of concern: Mastic Beach and Fire Island, because of debris, downed trees and flooding.
Source: Spokesman Jack Krieger
Hundreds of residents displaced due to power loss or damage.
$500,000 in damages to town facilities.
All major and secondary roads are open. Some smaller roads close occasionally due to residual flooding.
Areas of concern: Flooded areas south of Peconic Bay Boulevard in Jamesport; loss of protective dune from Creek Road in Wading River to Jamesport; bluffs from Wading River to Jamesport severely eroded, some parcels losing 15 feet of property.
Source: Supervisor Sean Walter
Fewer than 50 homes unfit for habitation.
Several hundred trees down and a "handful" of impassable roads -- including Dune Road -- due to flooding.
Source: Supervisor Anna Throne-Holst
Significant damage to several waterfront homes including foundations partly undermined. Significant damage to outbuildings, primarily beach houses, at several oceanfront estates from Wainscott to Montauk.
Gerard Drive in Springs only road still closed.
Areas of concern: Erosion problems in Montauk and other areas might be helped by the upcoming nor'easter, emergency services coordinator Bruce Bate said, because winds will come from a different direction and might push some sand back.
Source: Supervisor Bill Wilkinson and Bruce Bate
The last closed streets opened Monday; many fallen trees remain in town rights of way alongside roads.
Areas of concern: Low-lying areas of New Suffolk, including Rabbit Lane, where several houses were destroyed or severely damaged.
Source: Supervisor Scott Russell
No year-round homes lost; damage to summer houses not yet evaluated.
No streets currently blocked by downed trees.
Area of concern: The Ram Island Causeway, reopened to traffic but still in need of extensive repairs, which will not be done for quite some time.
Source: Town officials
Rough estimate of overall cost of damage $400 million, based on 2,000 homes south of Montauk Highway, each with an average of $200,000 in damage.
15 trees downed, five utility poles. No roads closed.
Areas of concern: Areas south of Robbins Avenue and Gamecock Lane, still without power and gas.
Source: Mayor Ralph Scordino
MASSAPEQUA PARK VILLAGE
250 village and residents' trees down.
Hundreds of residents displaced.
Area of concern: Bar Harbor area has most flood damage, most of village still without power.
Source: Mayor James Altadonna Jr.
At least 50 houses condemned so far, with number of displaced residents in the hundreds.
Estimate of damages in the tens of millions of dollars.
Only road still closed is a section of South Third Street, where a tree fell across the road but is resting on a LIPA pole. Residents have electricity and worry that removing the tree may cause their power to go out so they are awaiting a LIPA crew to come and assess the situation.
Area of concern: South of Montauk Highway, with the area below Shore Road given particular attention. Much of the area below Montauk Highway remains without electricity or gas.
Source: Mayor Thomas Brennan
75-100 village and residents' trees down.
Several hundred residents displaced.
Area of concern: East end of village, which had many homes damaged by flooding.
Source: Mayor Doug Watson