What city is 33131 in?

33131 is a Miami, FL mailing address. By land area, 100% lies inside Miami.

What is the population of 33131?

About 23,095 people (±1,811), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 26,213.

What is the median household income in 33131?

$144,138 (±$25,820), compared with $74,568 for Florida as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 33131?

20 USPS carrier routes with 17,827 residential and 2,310 business mailboxes (20,151 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 33131?

The closest, measured center to center: 33132 (1 mi, Miami), 33129 (1.1 mi, Miami), 33130 (1.2 mi, Miami), 33101 (1.3 mi, Miami), 33128 (1.4 mi, Miami) and 33136 (2 mi, Miami).

33131 ZIP Code, Miami, FL

33131 is a ZIP code in Miami, Florida in Miami-Dade County. It covers 0.5 square miles of land. The closest ZIP codes are 33132, 33129 and 33130. 23,095 people live here in 13,161 households. It is densely built, at about 46,098 people per square mile, and most households rent (37% own). Median household income is $144,138, well above the Florida median of $74,568; 28% of residents moved in during the past year.

Quick facts

Mailing city: Miami, FL
County: Miami-Dade County
Land area: 0.5 sq mi
Population: 23,095
Median household income: $144,138
Carrier routes: 20 (17,827 homes)

Key figures

Measure	Value
Residents	23,095
Households	13,161
Median household income	$144,138
Income per person	$120,707
Median age	35.9
Homeowners	37.0%
Median home value	$655,100
Median rent	$3,124
Bachelor's degree or higher	78.5%
Average commute (minutes)	19.1
Households with kids under 18	12.1%
Moved in the past year	28.2%
Below the poverty line	7.4%
Broadband internet	94.1%
Speak a non-English language at home	68.4%

Household income

% of households	Value
<$10K	5.2%
$10–15K	1.7%
$15–25K	1.9%
$25–35K	2.4%
$35–50K	3.9%
$50–75K	8.6%
$75–100K	10.3%
$100–150K	16.6%
$150–200K	14.0%
$200K+	35.3%

Age

% of all residents	Value
<10	7.6%
10–19	5.3%
20–24	6.7%
25–34	28.3%
35–44	22.4%
45–54	12.2%
55–64	10.8%
65–74	4.2%
75+	2.4%

Tenure

% of housing units	Value
Owned, with mortgage	17.1%
Owned outright	8.9%
Rented	44.1%
Vacant	29.9%

Type of building

% of housing units	Value
Detached house	2.1%
Townhome	0.5%
2–4 units	0.1%
5–19 units	1.2%
20+ units	96.1%
Mobile / other	0.0%

Businesses in 33131

4,180 business establishments with 49,970 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 1,582
Finance and Insurance: 597
Real Estate and Rental and Leasing: 386
Wholesale Trade: 243
Retail Trade: 232
Administrative and Support and Waste Management and Remediation Services: 192
Accommodation and Food Services: 184
Other Services (except Public Administration): 181

EDDM carrier routes

33131 has 20 USPS carrier routes with 17,827 residential and 2,310 business mailboxes. Open the EDDM route map.

Carrier routes in 33131

33131 has 20 USPS carrier routes (20 city (C)) with 17,827 residential and 2,310 business mailboxes. Routes range from 106 homes (C026) to 1,555 homes (C030); the median route has 791 homes. The Census counted 13,161 households in 33131 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	3
500–749	4
750–999	3
1,000–1,499	8
1,500+	1

Best routes in 33131 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route C026 — USPS business mailboxes 263, 106 homes
Route C027 — USPS business mailboxes 252, 646 homes
Route C038 — USPS business mailboxes 162, 459 homes
Route C033 — USPS business mailboxes 157, 455 homes
Route C044 — USPS business mailboxes 155, 821 homes

Select these 5 routes on the route map

Every carrier route in 33131

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C022	City	1,106	7	$172,913	—	—	—
C023	City	1,238	60	$127,707	—	—	—
C024	City	1,106	111	$127,707	—	—	—
C026	City	106	263	$165,534	—	—	—
C027	City	646	252	$185,956	—	—	—
C030	City	1,555	71	$129,295	—	—	—
C033	City	455	157	$165,534	—	—	—
C034	City	760	106	$33,526	—	—	—
C036	City	1,339	99	$116,013	—	—	—
C037	City	743	85	$33,526	—	—	—
C038	City	459	162	$129,295	—	—	—
C039	City	1,415	95	$185,956	—	—	—
C040	City	516	145	$200,001+	—	—	—
C041	City	614	55	$115,559	—	—	—
C042	City	1,344	10	$128,643	—	—	—
C044	City	821	155	$127,707	—	—	—
C048	City	755	116	$116,013	—	—	—
C050	City	337	108	$75,515	—	—	—
C051	City	1,104	149	$200,001+	—	—	—
C061	City	1,408	104	$127,707	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 33131 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

33132 — Miami city, FL (1 mi)
33129 — Miami city, FL (1.1 mi)
33130 — Miami city, FL (1.2 mi)
33101 — Miami city, FL (1.3 mi)
33128 — Miami city, FL (1.4 mi)
33136 — Miami city, FL (2 mi)
33139 — Miami Beach city, FL (2.3 mi)
33135 — Miami city, FL (3.2 mi)

Areas that include 33131

Miami, FL ZIP codes — 57 ZIP codes
Miami-Dade County ZIP codes — 80 ZIP codes
Florida ZIP code data

Where it ranks

Mail every home in 33131

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

Miami EDDM mailing

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 33131, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 33131 in?: 33131 is a Miami, FL mailing address. By land area, 100% lies inside Miami.
What county is 33131 in?: 33131 is in Miami-Dade County.
What is the population of 33131?: About 23,095 people (±1,811), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 26,213.
What is the median household income in 33131?: $144,138 (±$25,820), compared with $74,568 for Florida as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 33131?: 20 USPS carrier routes with 17,827 residential and 2,310 business mailboxes (20,151 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 33131?: The closest, measured center to center: 33132 (1 mi, Miami), 33129 (1.1 mi, Miami), 33130 (1.2 mi, Miami), 33101 (1.3 mi, Miami), 33128 (1.4 mi, Miami) and 33136 (2 mi, Miami).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.